Sound Class 9 Easiest Full Chapter in One-Shot Explanation | 2022-23 | PRanay Chouhan | Just Padhle

Sound Class 9 Easiest Full Chapter in One-Shot Explanation | 2022-23 | PRanay Chouhan | Just Padhle
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Kaisi lagi aavaz ki aavaz, meri aavaz mein? 😍

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Maja aaya aur yahi maja mein apne har dost ko dena chahta hun

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Your are very close 400k

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Gjb ki 👍

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Very nice And good advisor

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Ek number gazab ki aavaz

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3:12 What is sound 4:15 Wave motion 6:39 Vibrational motion 9:03 Particle vs wave motion 9:25 Types of waves : mechanical and non mechanical 11:07 Longitudinal and transverse 12:43 Production of sound 15:34 Propagation of sound 29:43 Sound needs a medium to travel 31:10 Continue Propagation of sound 34:20 General characteristics of Wave : Wavelength 36:54 Frequency 39:32 Time period 40:55 Amplitude 42:48 General characteristics of wave : Pitch 43:27 Loudness 43:45 Intensity 44:34 Timber 45:21 Tone and note 50:03 Relation between time period and frequency 50:56 What is the speed of sound 54:53 Reflection of sound 55:59 Echo and Reverberation 01:04:36 Ex 12.2 01:04:47 Uses of Reflection 01:05:41 Range of hearing : Infrasound and Ultrasound 01:09:07 Application of ultrasound 01:09:44 Question 01:10:39 One min revision 01:10:55 The end..... Edit: Thanks for 2k likes❤ Next Target like: 2.5k😅 Edit: Sab apne exam phod Dena😉

[@eklavyaeditz]

Nice ☺️

[@daksh4468]

thznks

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Thanks

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Thank you bro ❤

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you are the god's man

[@i_reversal9329]

🎯 Key Takeaways for quick navigation: 00:18 🎶 *Sound is crucial; understanding its basics is essential for this chapter.* 02:18 📚 *Some details are omitted in this explanation for simplicity, ensuring the core concepts are understood.* 03:31 💡 *Sound is a form of energy that produces sensation in hearing; understanding its nature is vital.* 04:26 🌊 *Sound is a type of wave motion, different from particle motion, and understanding these distinctions is key.* 05:08 🔍 *Three types of motion are discussed: translational, rotational, and vibrational.* 05:23 🔄 *Vibrations and oscillations are crucial concepts in wave motion.* 06:35 🗣️ *Sound is essentially a form of vibration, where particles oscillate but do not displace significantly.* 07:31 🔊 *Sound is produced when objects collide, causing vibrations to propagate.* 08:16 📈 *Vibrations or wave motion progress through collisions, propagating further with each collision.* 08:46 🔊 *Particle motion and vibration energy transfer explanation.* 09:29 🌊 *Explanation of wave motion and types of waves.* 09:55 🔍 *Explanation of mechanical and non-mechanical waves and the role of medium.* 11:08 🌐 *Introduction to longitudinal wave transfer.* 11:51 ⬅️ *Understanding of wave vibration direction and propagation.* 13:47 🔊 *Vibrations resulting from collision lead to sound production, demonstrating the essential role of collision in creating sound.* 14:15 🔊 *Wave energy is produced through vibrations, illustrating the connection between vibrations and wave energy.* 15:23 🔊 *Sound production requires collision, emphasizing the necessity of collision for sound production to occur.* 16:05 🗣️ *Sound can travel through various mediums such as air, solid, liquid, or gas.* 16:32 🎚️ *Sound requires a medium for transmission, which could be solid, liquid, or gas.* 17:00 🔊 *Understanding the concept of medium in sound transmission is crucial, whether it's solid, liquid, or gas.* 17:43 🎙️ *The source of sound determines where sound originates, with particles vibrating and transmitting energy.* 18:36 🚗 *Sound propagation concepts lay the foundation for more complex topics in sound physics.* 19:32 🔊 *Sound travels through compression and rarefaction of particles in a medium.* 20:00 🔄 *Compression refers to particles being pushed closer together, while rarefaction is when they spread apart.* 20:45 🤔 *Compression and rarefaction are essential for sound waves to propagate.* 23:19 ⚡ *Collision between particles illustrates compression and subsequent rarefaction, crucial for sound transmission.* 24:42 📈 *Pressure variations in sound waves affect particle distribution.* 25:09 🎯 *Sound production involves compression followed by rarefaction.* 26:20 📊 *Graphing sound waves involves plotting compression and rarefaction.* 29:07 📉 *Graphs are drawn to represent compression and rarefaction in sound waves, aiding visualization of the wave's behavior.* 30:28 🔇 *Creating a vacuum inside a jar eliminates air particles, resulting in silence, demonstrating the necessity of a medium for sound transmission.* 30:58 🔊 *Sound travels faster in denser mediums due to particles being closer together.* 31:11 🌊 *Sound travels through different mediums by causing vibration in particles.* 31:37 ⚡ *Energy transfer occurs more efficiently when particles are closely packed.* 32:07 🌀 *Sound speed varies in different mediums due to particle spacing.* 32:34 🌐 *Characteristics of sound waves include wavelength, frequency, time period, and amplitude.* 33:30 📐 *Pressure and density change as sound waves propagate, affecting their characteristics.* 33:58 ⬆️ *Crest represents high pressure while trough represents low pressure in sound waves.* 34:13 📉 *Sound wave graphs depict pressure variation over time, showing crest, trough, and average density.* 34:39 🔍 *The distance between two crests or two troughs in a wave is called wavelength, measured in meters.* 36:01 📏 *The representation of wavelength using lambda (λ) symbol is the distance between two consecutive similar points in a wave.* 37:11 🔄 *Frequency refers to how often a phenomenon occurs within a given time frame, analogous to the number of occurrences per unit time.* 38:23 ⏰ *The frequency of waves determines how quickly they repeat within a given time frame, influencing their characteristics such as crest and trough occurrence.* 38:37 🎤 *Frequency is represented by the term "new," which corresponds to Hertz, indicating higher frequency means more oscillations.* 39:19 📐 *Understanding wavelength: longer wavelength means lower frequency, shorter wavelength means higher frequency.* 40:47 🌊 *Relationship between wavelength, time period, and frequency: longer wavelength or time period corresponds to lower frequency, shorter wavelength or time period corresponds to higher frequency.* 41:31 📏 *Amplitude relates to the extent of vibration from the rest position, where greater displacement means higher amplitude.* 42:21 🔊 *Wave properties like wavelength and amplitude affect sound intensity.* 44:10 🔉 *Adjusting amplitude affects loudness, with higher amplitude resulting in louder sounds.* 45:21 🔊 *Sounds with a single frequency are termed as "tone," while those with multiple frequencies are "timbre."* 47:04 🔊 *Loudness and frequency are independent characteristics of sound waves.* 47:45 🎶 *Changing frequency affects the pitch of sound, while changing amplitude affects the intensity of sound.* 48:17 🔊 *Intensity depends on amplitude, while loudness is subjective and varies from person to person.* 49:56 🔄 *Intensity is directly related to loudness, while frequency inversely relates to period.* 50:52 🎯 *Sound speed is calculated using the formula: Speed = Distance / Time.* 51:19 📏 *Wave length measures the distance between two crests or two troughs.* 53:32 🤔 *Speed of sound is independent of wavelength, frequency, and physical conditions under "normal" circumstances.* 54:41 🌊 *Sound travels faster through denser mediums like steel compared to less dense mediums like air.* 54:54 🔄 *Reflection of sound is similar to reflection of light and follows certain rules.* 55:23 🔍 *Understanding incident angle and reflection angle is crucial for understanding sound reflection.* 55:52 🔊 *Sound can reflect and propagate even when obstacles are present, leading to phenomena like reverberation.* 56:06 🗣️ *Echo and reverberation are two applications of sound reflection, with echo being immediate and reverberation being prolonged.* 56:45 🧠 *Our brain processes sound within 0.1 seconds, making it essential for clear sound reception.* 57:14 🛑 *Rapid succession of sounds within 0.1 seconds can hinder clear comprehension due to overlapping processing in the brain.* 57:52 🔄 *Differentiating between original sound and reflected sound helps in understanding sound clarity, with a 0.1-second interval between them being optimal.* 58:21 🔊 *Minimum condition for sound: To hear a sound distinctly, there should be a minimum difference of 0.1 second.* 58:36 📏 *Speed of sound: Calculated to be 344 meters per second in air.* 59:33 📏 *Distance calculation: Utilizing simple mathematical formulas to calculate distances based on known speeds and time requirements.* 01:00:02 🗣️ *Sound reflection: Calculating the minimum distance for sound to reflect back, ensuring clarity in transmission.* 01:00:59 🔄 *Sound travel distance: Determining the total distance traveled by sound based on known speed and time.* 01:02:08 🎯 *Understanding the speed of sound is crucial; it indicates how fast sound returns after reflection.* 01:02:46 💡 *Calculating minimum distance for sound reflection is vital for proper understanding and application.* 01:03:30 🕒 *Calculation of time taken for sound to travel a certain distance involves simple formulas.* 01:04:00 📢 *Reflection and reverberation play crucial roles in sound perception and acoustics.* 01:05:12 🔊 *Understanding sound reflection is essential for realizing how sound travels and reaches our ears effectively.* 01:05:40 🔊 *The concept of hearing range (20 Hz to 20,000 Hz) is crucial in understanding the capabilities of the human ear.* 01:06:50 🎧 *The range of human hearing encompasses sounds with frequencies ranging from 20 Hz to 20,000 Hz, beyond which infrasonic and ultrasonic sounds cannot be perceived.* 01:08:00 🦕 *Infrasonic sounds, below 20 Hz, can be heard by some animals like dinosaurs, while ultrasonic sounds, above 20,000 Hz, may be audible to certain animals like dolphins.* 01:09:09 💡 *Ultrasound has various medical applications, including sonography for imaging internal body structures and detecting conditions like kidney stones.* 01:09:38 💊 *Ultrasound with high frequencies can be used to break kidney stones, offering a treatment option for such conditions.* 01:09:56 📏 *Understanding the relationship between speed, distance, and time is crucial, as speed equals distance upon time.* Made with HARPA AI

[@Darkzshadowxz]

Itna notes maine pure chapter me nhi banaya

[@i_reversal9329]

@@Darkzshadowxz AI se meine banaaye hein Bhai ghanta kuch kar meine

[@Darkzshadowxz]

@@i_reversal9329 ha wo Maine padha lekin mai bas bata rha tha

[@DazeddXx.]

Thankyou!!!

[@Aad01286]

EXAMS ARE NEAR NOTHING IS CLEAR BUT NO NEED TO FEAR PRANAY BHAIYA IS HERE

[@seemabelgaonkar8741]

Short be ❤❤

[@user-my1gl8ko5h]

Wahawa wahawa

[@Inosuke-1940]

👀

[@firegamerz819]

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[@manasdixit5040]

​@@firegamerz819Hy

[@adityasharma-dv7sd]

pranay bhaiya. best lecture on the channel..... u worked so hard for us just for us to score good in our exams. Thank you soooooo much!

[@Excitedgaming859]

Newton 5 law state that exam is directly propotional to fear and stress in mind and inversely propotional to time taken to complete full syllabus in one night 🙃🙃

[@Nancy-qw6en]

The introduction was everything to me when he said " Kyu sunni hoti hai aawaz" It was very funny😂😂😂 He just brings fun of studies even in a subject like history thanks a lot pranay bhaiya/sir ❤

[@adarshgupta951]

😊

[@Daizyofficial696]

Army ????

[@Magic_World927]

How many students 😮come in 2024😅 , 😂😂present lagbaa lo🤠 👇👇👇,

[@Magic_World927]

Comment your Instagram id 🐹

[@himanshiyadav8078]

Only channel where you get knowledge in a humorous way ❤️All thanks to Pranay bhaiya

[@Abeer0509]

Himanish never gives up !!

[@hussain.am_]

@@Abeer0509 imagine simping

[@Abeer0509]

@@hussain.am_ bro it is a meme for a boy named himanish who is in my class it goes like "himanish never gives up, mata ka jagrata smth"

[@hussain.am_]

@@Abeer0509 but the person you replied to is himanshi not himanish

[@hussain.am_]

@@Abeer0509 btw that's real good 😂

[@HarshPlayzYt16]

Tomorrow is my science exam and the sound chapter is coming I am waiting for this chapter thank you so much bhaiya ❤️❤️❤️❤️

[@ayushxst]

Woah! You got heart from pranay bhaiya. Awesome

[@PANKAJ_AGRAWAL859]

Hello bro are u a ff player

[@PRINCE-K20073]

13:18 mujhe laga Mera net nhi chal rhaa😅😅😅 By the the way Just padhle is best😊😊😊

[@anshals.h6143]

Same dude 😂😂😂

[@m.jgaming9521]

Kis kis ne aumbulance ki aawaz suni😂😅😅

[@nawab____boy____01_]

Tune suni hogi

[@Erenyeager-hp9vl.]

Tumne bhai 😂😂😂

[@jyothigopalan2472]

THIS HELPS SOOOOOOOOO MUCH TO PPL WHO DONT UNDERSTAND THINGS AT SCHOOL, YOUR VIDS RLY DO HELP...THANKYOU!!!

[@advikapanwar]

I am just fascinated by your teaching and guitar playing skillss... Crystal clear ho gye concept 😄😃

[@VishnuSharma-dr2yi]

Anyone notices the police sound on 42:35 mins btw aaj kal I liked my own comment likhne se jyada likes milte hai😂😂😂

[@user-eu1ee8cr8q]

Haaa

[@user-pq4wj1uo4z]

Yes

[@cristiano19786]

Tomorrow is my UT of science which includes the chapter sound and i got it just few seconds ago.......... Hats off to u *PRanay Bhaiyaa*

[@-spider2501-]

thank you so much Bhaiya! The way you teach is sure to never make us forget the concepts😄❤

[@shriyanshupadhyay6452]

41:38 can you hear that sound in background???? Comment below Is it of.. Ambulance or polic ?? At 42:35 again that sound heared....!!

[@Idkwhattu]

Pranay bhaiya you're the best, we really needed this type of lectures it's really helpful for a revision before exams..hope we'll get teachers like you in our life ahead ❤️

[@arian.ydv.]

Waiting for this chapter from very long time 😁 finally got it 🥳 thanks pranay bhaiya

[@ayushxst]

Thank u bhaiya for this awesome lecture. I completed almost whole syllabus from you and your team. This is the best lecture on youtube and funny too😆. Congrats to Just Padhle for being the best channel for class 9th. May u hit a million subscribers soon.Thanks a lot❤❤

[@SARTHAKJJAIN]

Key Takeaways for quick navigation: 00:18 🎶 Sound is crucial; understanding its basics is essential for this chapter. 02:18 📚 Some details are omitted in this explanation for simplicity, ensuring the core concepts are understood. 03:31 💡 Sound is a form of energy that produces sensation in hearing; understanding its nature is vital. 04:26 🌊 Sound is a type of wave motion, different from particle motion, and understanding these distinctions is key. 05:08 🔍 Three types of motion are discussed: translational, rotational, and vibrational. 05:23 🔄 Vibrations and oscillations are crucial concepts in wave motion. 06:35 🗣 Sound is essentially a form of vibration, where particles oscillate but do not displace significantly. 07:31 🔊 Sound is produced when objects collide, causing vibrations to propagate. 08:16 📈 Vibrations or wave motion progress through collisions, propagating further with each collision. 08:46 🔊 Particle motion and vibration energy transfer explanation. 09:29 🌊 Explanation of wave motion and types of waves. 09:55 🔍 Explanation of mechanical and non-mechanical waves and the role of medium. 11:08 🌐 Introduction to longitudinal wave transfer. 11:51 ⬅ Understanding of wave vibration direction and propagation. 13:47 🔊 Vibrations resulting from collision lead to sound production, demonstrating the essential role of collision in creating sound. 14:15 🔊 Wave energy is produced through vibrations, illustrating the connection between vibrations and wave energy. 15:23 🔊 Sound production requires collision, emphasizing the necessity of collision for sound production to occur. 16:05 🗣 Sound can travel through various mediums such as air, solid, liquid, or gas. 16:32 🎚 Sound requires a medium for transmission, which could be solid, liquid, or gas. 17:00 🔊 Understanding the concept of medium in sound transmission is crucial, whether it's solid, liquid, or gas. 17:43 🎙 The source of sound determines where sound originates, with particles vibrating and transmitting energy. 18:36 🚗 Sound propagation concepts lay the foundation for more complex topics in sound physics. 19:32 🔊 Sound travels through compression and rarefaction of particles in a medium. 20:00 🔄 Compression refers to particles being pushed closer together, while rarefaction is when they spread apart. 20:45 🤔 Compression and rarefaction are essential for sound waves to propagate. 23:19 ⚡ Collision between particles illustrates compression and subsequent rarefaction, crucial for sound transmission. 24:42 📈 Pressure variations in sound waves affect particle distribution. 25:09 🎯 Sound production involves compression followed by rarefaction. 26:20 📊 Graphing sound waves involves plotting compression and rarefaction. 29:07 📉 Graphs are drawn to represent compression and rarefaction in sound waves, aiding visualization of the wave's behavior. 30:28 🔇 Creating a vacuum inside a jar eliminates air particles, resulting in silence, demonstrating the necessity of a medium for sound transmission. 30:58 🔊 Sound travels faster in denser mediums due to particles being closer together. 31:11 🌊 Sound travels through different mediums by causing vibration in particles. 31:37 ⚡ Energy transfer occurs more efficiently when particles are closely packed. 32:07 🌀 Sound speed varies in different mediums due to particle spacing. 32:34 🌐 Characteristics of sound waves include wavelength, frequency, time period, and amplitude. 33:30 📐 Pressure and density change as sound waves propagate, affecting their characteristics. 33:58 ⬆ Crest represents high pressure while trough represents low pressure in sound waves. 34:13 📉 Sound wave graphs depict pressure variation over time, showing crest, trough, and average density. 34:39 🔍 The distance between two crests or two troughs in a wave is called wavelength, measured in meters. 36:01 📏 The representation of wavelength using lambda (λ) symbol is the distance between two consecutive similar points in a wave. 37:11 🔄 Frequency refers to how often a phenomenon occurs within a given time frame, analogous to the number of occurrences per unit time. 38:23 ⏰ The frequency of waves determines how quickly they repeat within a given time frame, influencing their characteristics such as crest and trough occurrence. 38:37 🎤 Frequency is represented by the term "new," which corresponds to Hertz, indicating higher frequency means more oscillations. 39:19 📐 Understanding wavelength: longer wavelength means lower frequency, shorter wavelength means higher frequency. 40:47 🌊 Relationship between wavelength, time period, and frequency: longer wavelength or time period corresponds to lower frequency, shorter wavelength or time period corresponds to higher frequency. 41:31 📏 Amplitude relates to the extent of vibration from the rest position, where greater displacement means higher amplitude. 42:21 🔊 Wave properties like wavelength and amplitude affect sound intensity. 44:10 🔉 Adjusting amplitude affects loudness, with higher amplitude resulting in louder sounds. 45:21 🔊 Sounds with a single frequency are termed as "tone," while those with multiple frequencies are "timbre." 47:04 🔊 Loudness and frequency are independent characteristics of sound waves. 47:45 🎶 Changing frequency affects the pitch of sound, while changing amplitude affects the intensity of sound. 48:17 🔊 Intensity depends on amplitude, while loudness is subjective and varies from person to person. 49:56 🔄 Intensity is directly related to loudness, while frequency inversely relates to period. 50:52 🎯 Sound speed is calculated using the formula: Speed = Distance / Time. 51:19 📏 Wave length measures the distance between two crests or two troughs. 53:32 🤔 Speed of sound is independent of wavelength, frequency, and physical conditions under "normal" circumstances. 54:41 🌊 Sound travels faster through denser mediums like steel compared to less dense mediums like air. 54:54 🔄 Reflection of sound is similar to reflection of light and follows certain rules. 55:23 🔍 Understanding incident angle and reflection angle is crucial for understanding sound reflection. 55:52 🔊 Sound can reflect and propagate even when obstacles are present, leading to phenomena like reverberation. 56:06 🗣 Echo and reverberation are two applications of sound reflection, with echo being immediate and reverberation being prolonged. 56:45 🧠 Our brain processes sound within 0.1 seconds, making it essential for clear sound reception. 57:14 🛑 Rapid succession of sounds within 0.1 seconds can hinder clear comprehension due to overlapping processing in the brain. 57:52 🔄 Differentiating between original sound and reflected sound helps in understanding sound clarity, with a 0.1-second interval between them being optimal. 58:21 🔊 Minimum condition for sound: To hear a sound distinctly, there should be a minimum difference of 0.1 second. 58:36 📏 Speed of sound: Calculated to be 344 meters per second in air. 59:33 📏 Distance calculation: Utilizing simple mathematical formulas to calculate distances based on known speeds and time requirements. 01:00:02 🗣 Sound reflection: Calculating the minimum distance for sound to reflect back, ensuring clarity in transmission. 01:00:59 🔄 Sound travel distance: Determining the total distance traveled by sound based on known speed and time. 01:02:08 🎯 Understanding the speed of sound is crucial; it indicates how fast sound returns after reflection. 01:02:46 💡 Calculating minimum distance for sound reflection is vital for proper understanding and application. 01:03:30 🕒 Calculation of time taken for sound to travel a certain distance involves simple formulas. 01:04:00 📢 Reflection and reverberation play crucial roles in sound perception and acoustics. 01:05:12 🔊 Understanding sound reflection is essential for realizing how sound travels and reaches our ears effectively. 01:05:40 🔊 The concept of hearing range (20 Hz to 20,000 Hz) is crucial in understanding the capabilities of the human ear. 01:06:50 🎧 The range of human hearing encompasses sounds with frequencies ranging from 20 Hz to 20,000 Hz, beyond which infrasonic and ultrasonic sounds cannot be perceived. 01:08:00 🦕 Infrasonic sounds, below 20 Hz, can be heard by some animals like dinosaurs, while ultrasonic sounds, above 20,000 Hz, may be audible to certain animals like dolphins. 01:09:09 💡 Ultrasound has various medical applications, including sonography for imaging internal body structures and detecting conditions like kidney stones. 01:09:38 💊 Ultrasound with high frequencies can be used to break kidney stones, offering a treatment option for such conditions. 01:09:56 📏 Understanding the relationship between speed, distance, and time is crucial, as speed equals distance upon time.

[@Erenyeager-hp9vl.]

Padhte kab ho 😂

[@RHGREDEYE]

Sound chapter meh jin logo ko ambulance ka sound sunai diya wo like kare😅

[@sunitakumarimishra8300]

I was just searching a video about sound and finally I got this notification.This video made my rest of the day Pranay Bhai is the best ❤️

[@syednamra3083]

You were my best discovery pranay bhaiya🤧💖 and after discovering you i understood that nothing is actually boring its just the way of teaching and understanding ...✨

[@syednamra3083]

@@NazirAhmad-th4gs ??

[@dipeshraut1874]

Thank you bhaiyya! Aisa video dekhke aise dil me khushi hoti hai...

[@nafisashabbirhusain3561]

59:23 sir sound kisi bhi object se agar takrayega to wo penetrate kyu nahi karega agar wo takrata he to phir sound ki speed solid me bhi kyu calculate hoti he

[@Anupma_23]

Thanks sir for this wonderful explaination 😃 I needed the chapter in one go . This channel is the best 🥰

[@induchauhan7470]

I was just struggling to find a short lecture of this chapter and I got the notification just a few seconds ago 😂❤️ pranay bhaiya is the best✨

[@NamrataSharma07]

Same here tomorrow ki ma exam 🥲🥲

[@STUDY_MON]

@@NamrataSharma07 aur mera 2din baad 🤣

[@NamrataSharma07]

@@STUDY_MON good

[@NamrataSharma07]

@@STUDY_MON best of luck 🤞

[@STUDY_MON]

@@NamrataSharma07 same to you 😀🤭

[@manasviverma16]

JustPadhle!! thxsss a lot for ur support throughout myyy 9th class which was actuallyy rlly difficult but u rlly made it a lot more easier......thxs a lot pranay bhaiya for ur love support n everythin loads of love

[@vipulgarchar9946]

Aapke sare chapters science ke explain kiye hue mene dekh liye and today i am watching your last video and my syllabus will be finished...i will always prefer your videos for quick revision thank you for everything sir...I literally Lived class 9 with you💗

[@srushtiatharva1216]

The way you played guitar bhaiyaaa is awesomeeeeee ❤️❤️❤️❤️❤️❤️❤️ and thank you so much for for this video I was waiting since long time for this.. and finallyyy❤️❤️🥺

[@jaiparkashsingh4059]

Bhaiya you know that in the way you use to present a lecture is so energetic ❤️❤️❤️❤️ whe studying we feel so excited 🥰🥰🥰

[@raj07829]

42:35 bheya ko pakarne police aayi hai 🚔🚓👮👮‍♀️👮‍♂️🚨😂😂

[@cognitocast]

@JustPadhle thanks Pranay Sir, it helped a lot ! :))

[@Zoya504.08]

Sir love your content , hats off to u 🙌🏼

[@BlackVeilDiscoRoyaleInReverse]

No one teaches like you bro. May God bless you! I have nothing but love, respect and prayers for you.. from the bottom of my heart

[@gaminggeekyt5598]

""Bro""?! 💀

[@rajivjain0974]

Bro ? 😂😢

[@BlackVeilDiscoRoyaleInReverse]

What's with the surprise? 😂😂I know that my comment is cheesy and cringy... but the guy was a saviour for me in 9th.@@rajivjain0974

[@triplast1880]

america got talent bro got as

[@adith3428]

💀Wha-

[@Heartlassie]

Thank you so much bhaiya for this wonderful video 🥰☺️and I was shocked when you play ukulele but I can relate this cuz I play piano. Bhaiya tomorrow is my exam and this video was perfect for me and all the students who are watching before exams. Once again thank a lot bro ♥️🥰☺️

[@gamingmasteryt3615]

Bhaiya sound ki notes aa hi nahi raha website pa download karnaa ha

[@deshrajkuntal6245]

All thanks to pranay bhaiya without ur support it is very difficult to give our best in exam thank you so much bro 🥰🥰

[@vidhigehlot2951]

Waiting for this chapter from very long time .I was just struggling to find a short lecture of this chapter and I got the notification just a few seconds ago Thank u soo much for this videooo. thanks sir for u and your team support

[@advaithravi6959]

hi sir , just a suggestion but i prefer these kind of videos rather than the smart board ones because i can see the ppt clearly and closely than the smart board because teachers will in front and covers materials too , i don't know if others also think the same way but ya i prefer ppt from ipad.

[@shivani6286]

ur great pranay bhaiya u mix the study with joy and fun or kb video ka end aa gya pta bhi nhi chla😌THANK YOU

[@himanshuseth1922]

Everything is temporary But Gattu and Bittu is permanent😂

[@manasviverma16]

IKRRRR noticed too

[@mc_gaming_spot7469]

@@manasviverma16 😭👌🏻 lmao

[@manasviverma16]

@@mc_gaming_spot7469 yasss

[@tiwarichemicals2870]

Guys pls time tag kar do

[@ritunain7355]

😅😅😅

[@shruti5398]

Pranay bhaiya...milkr macha denge and voice was awesome.... moreover we feel happy ki humare pranay bhaiya guitar bhi bajate h !...baki keep going... always there with u being a pranay bhaiya's family 🤞...love from j and k ❣️

[@InfiniteImmersive665]

Newton 5th law state that the exam is directly proportional to fear and stress in mind and inversely proportional to time taken to complete full syllabus in one night 🙃

[@siddhi2989]

Thankyou Bhaiya For this amazing Lecture now I'm confident about this chapter for my final examination 💗✨

[@nitinsaxena4906]

FINALLY THE MUCH AWAITED LECTURE!!!

[@Anaikapandey]

THANK YOU, BHAIYA, WE WERE WAITING FOR THIS CHAPTER ONLY WITH THIS WE HAVE COMPLETED OUR SYLLABUS.

[@aloomatar1810]

Nahi mera toh kabka khatam ho gaya gawar ye toh bas revision hai

[@fashiongirl9964]

Jab awaz mere dost tak jari hai to Hume Janna kyu hai ki wo kese jari hai 😢😢

[@fashiongirl9964]

Mtlb har chiz ke andr ghusna jruri hai kyaaaa 😂😂

[@amarbati9454]

Ye to chapter hai lodu

[@amarbati9454]

To video main kyun aaya hai tu

[@Erenyeager-hp9vl.]

​@@fashiongirl9964 Wah bhai 😂😂😂

[@raj07829]

0:23 bheya apne talent ka flex kr rhe hai 😂

[@msrgamer1289]

😂😂😂

[@Techno_inventor]

Nahi wo taar hilanae ki awaaz ko flex kar raha hai 😂😂

[@ichchakadam6264]

the guitar parttttttttt ooof PRanay bhaiyaa really grtttt

[@Divu-nanu]

😂😂

[@vardhmantradingco]

Thank you sir you r kinda popular in my school everyone studies from u r lectures thank uhh sir please keep supporting us❤️‍🔥

[@anshika2210]

U r awesome sir i fully understand this chapter thanks a lot 😊😍

[@user-pb7zb1dc2f]

Thank you sir it helps me so much❤❤

[@pearly_dropsy07]

Exam se pehle revision ke liye sb se badhiya apka one shot hai ✨ saare doubt clear ho gye thanks a lot Pranay bhaiya 💫

[@shlokbhagtani]

videos of the pastrolists,circles,quadrilaterals are needed pranay bhaiya i am struggling with it

[@anugrah5856]

No one can beat you.The best teacher in world.Keep on going

[@explore_with_AMRITAMISHRA]

13:19 muja laga internet connection chala gaya

[@Riya___kumar___124]

This man always teach us like our bsf💗 thank u bhaiya💖💖

[@rekhapareek8163]

Amazing so many efforts you put for us 😊

[@More_jr07]

I scored 38/40 in my exam thank you bhaiya

[@ashgaming2195]

congrats dude

[@Abhiyanshbhatia007]

thank you bhaiya , dil se pyaar hai apko. Mujhe ye chapter karne mai bohot problems ati thi but, apne sab dur kar di .

[@sharique0707]

1:09:02 bhai, i am literally studying at 3am alone and you just scared the shit out of me by saying those words 💀

[@adyashamohanty8079]

pehele neend poori kar lo jii

[@manionduty1]

npc

[@shalinirajawat1292]

I can't found anyone like you sir ❤😊

[@HaksonBhaiOfficials]

TECHY YT 1 year ago (edited) 3:12 What is sound 4:15 Wave motion 6:39 Vibrational motion 9:03 Particle vs wave motion 9:25 Types of waves : mechanical and non mechanical 11:07 Longitudinal and transverse 12:43 Production of sound 15:34 Propagation of sound 29:43 Sound needs a medium to travel 31:10 Continue Propagation of sound 34:20 General characteristics of Wave : Wavelength 36:54 Frequency 39:32 Time period 40:55 Amplitude 42:48 General characteristics of wave : Pitch 43:27 Loudness 43:45 Intensity 44:34 Timber 45:21 Tone and note 50:03 Relation between time period and frequency 50:56 What is the speed of sound 54:53 Reflection of sound 55:59 Echo and Reverberation 01:04:36 Ex 12.2 01:04:47 Uses of Reflection 01:05:41 Range of hearing : Infrasound and Ultrasound 01:09:07 Application of ultrasound 01:09:44 Question 01:10:39 One min revision 01:10:55 Thank You Bachoo 😍😍 Edit: Thanks for 2k likes❤ Next Target like: 3.9😅 Edit: Sab apne exam phod Dena😉

[@anuragaroravlogs2770]

Hats off to you sir aap ek ek chiz bohot ache se samjhate ho ❤

[@krishreal24]

Kal exam h aur abhi yeh video is just like a saviour, cuz its uploaded just one day before my exam

[@manrajaulakh6175]

To all the grade 9 appearing final exams on 2023 i wish u all the best of luck🖤💫

[@PrettyHarshita]

Your videos are very interesting and helpfull thankyou for teaching us

[@user-ks5qn1nb7r]

Thanks for uploading 1 day before my exam I was really worried about this chapter😊

[@sumdumb5524]

Can't tell you how much i needed this

[@khushiyadav1018]

Sir your explanation is just wow💕I usually do not understand physics but after seeing this video mine all concepts of this chapter is clear ... thankuhhh so much😊

[@monitha.m4397]

The video was really helpfull I thought this chapter was really hard but thanks to Pranay bhaiya who made it easy 😊

[@aakritixjain08]

19:47 iska matlab jese hum ek game khelte hain ki ek doosre ke kaan mein koi word bolna hota hai fir end main doosre bande ko batana hota hai In this particals are humans and sound is the word

[@riyarai1484]

Bhaiyaa theeee most awaited chapter thank youuu😭❤️

[@AnshulBharti-de3hm]

Hii

[@jaisiyaram77]

Thanks Sir For Such a Wonderful Lecture 🥰

[@JanardhanRay]

Where can I know about the cbse deleted syllabus? I mean which website? 🤔

[@user-rg5bj3if7t]

53:46 just play it for bhaiya

[@Reputation2656]

Waiting for this lecture from about 3 weeks ! Finally !!! Now I can say my science revision comes to an end 😅 Thanks Bhaiya!!!

[@nighteagle97]

SIR YOU ARE A LIFE SAVOR, i have an exam tomorrow which in which this chapter is also included and i was struggling with it now i can finally understand it, thank you bro

[@Joshua_Francis]

Thank you Sir, for your hardwork for us. You teach very well. And able to understand everything. 😊

[@user-md1yc7hz8r]

Thank you pranay bhaiyaa I am glad that I've found a knowledgeable treasure ❤

[@aaravgamer8743]

Thank You Sir❤️

[@tanvi-4769]

8:22 that "aree meri jaan" was just😂🔥 ❤️❤️...u r the best teacher bhaiya.....thank u soo much for all your efforts 🥰

[@monika_o_o]

🤣🤣

[@dayaram9192]

😂😂👌🏻👌🏻

[@tanvi-4769]

@@monika_o_o 😂😂

[@tanvi-4769]

@@dayaram9192 😂😂

[@SonuSonu-it2bo]

😂😂

[@Education_is_student_life]

Intro~~`🔥🔥🔥 Sir ur so amazing 🫶🫶

[@GauravThakur-...]

Pranay bhaia aache se samjhaya aapne I love your technique ❤❤

[@vinodsaxena29]

Bhaiya you should also start a guitar teaching channel 🙂🙂

[@anushkajadhav3753]

I was seriously waiting for this lecture Thanks bhaaaayyyyaaaaaa God always bless you U saved my few precious marks through this lecture 😍

[@aloomatar1810]

Sobo girl hai kya bhaayaaaaaa cringe kahi ki

[@abhishekkumarsingh4830]

Bhaiya padhle app par notes nahi mil raha hai? Agar aap provide karwaa dete to aacha hota

[@user-th5wz7ji8l]

13:16 after this when he suddenly got silent and still I literally thought that the video was loading and completely ignored it. It was during my second time watching this video I realised that he did it on purpose

[@nishantagarwal4818]

I litterallyy can't understand this chapter from atleast a week ago !!but now it's just sooo clear ❤️🤌

[@bhavyajoonop5810]

1:57 1:57 1:57 1:57 1:57 1:57

[@lemontang_2049]

THANK YOU SOO MUCH PRANAY BHAIYAAAA I WAS SOOO TENSED FOR THIS CH!!!! THERE WAS NO PROPER VIDEO FOR THIS SOUND CH THAT SATISFIED ME!! 🥲ACTUALLY INITALLY LOST HOPE AS SOON AS I FOUND OUT JUST PADHLE DOESNT HAVE A LECTURE FOR THIS CH, I WAS MENTALLY PREPARING MYSELF TO FAIL IN THIS CH😰😂😂

[@monishkarathod3564]

The intro ........ mind-boggling ❤❤❤❤

[@user-js2ym5dt8q]

The intro is always thrilling 🔥💯

[@nikhilmasterofficial2834]

What a amazing guitar player is in our country

[@SakshamSikri]

Who likes Pranay bhaiya's Smile? 😊😊😀

[@Anshika_Patel_04]

Me.

[@freezing_world419]

C❤😂😊

[@maureen_rawat00]

Bhyiiii this is so amazinggg🤡💗bdi jldi hi pura chapter khel khel me hogaya👾uniiii itbiii itbbiii now ill dancee🎉😂

[@ananyasharma-zt9ch]

Best explanation sir. By the way you play guitar really nice. 👍

[@kritarthxshinchan2046]

Pranay bhaiya i was scared by listening these complex words in my school but after watching the lecture these terms are so fuddu to me 🤩 Thanks bhaiya! 😇