Sound in One Shot | CBSE Class 9 | Chapter 11 | Science

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[@SantoshkumarPrajapati-oj3cw]

Vote for very important questions in final exam

[@kanikabisht784]

Of all chapters?...

[@Mohit_saini_551]

Yes of all chapters social science and science

[@Mohammadihuriya]

Yes

[@shwetapatil2309]

😂

[@Neptune_HD]

00:22 Introduction to the topic of sound and its components 03:15 Sound is a crucial topic with numericals and practical applications. 07:47 Sound is explained through particle vibration 10:13 Understanding the concept of waves and sound propagation 15:17 Mechanical waves require a medium for propagation. 17:57 Sound requires a medium to travel 22:24 Transverse waves involve particles moving perpendicular to the motion of the wave. 24:35 Sound is a type of energy creating sensation. 28:48 Compression region has higher pressure and density 30:53 Analysis of pressure and density relation in wave propagation 35:25 Sound is energy that creates sensation in the ears and can travel as a mechanical wave. 37:33 Characteristic of sound and amplitude explained. 42:15 Loudness is the measure of response of the ear to sound 44:36 Loudness is not the same as intensity. 49:47 Frequency is the number of vibrations per second 52:18 Frequency and time periods are key concepts in wave analysis. 57:03 Understanding the concept of shrillness and pitch in sound. 59:27 Frequency, amplitude, wavelength, and pitch are key factors in determining the characteristics of sound waves. 1:04:18 Understanding the concept of wave frequency and characteristics. 1:06:31 Frequency, period, amplitude, and velocity in sound science 1:11:36 Difference between lightning and thunder 1:13:38 Sound reflects and follows laws similar to light reflection 1:18:18 Understanding sound resonance and how the brain processes different sounds 1:20:37 Understanding the concept of sound reflection and echo 1:25:45 Multiple reflections of sound in practical applications 1:27:59 Understanding the Principle of Reflection of Sound 1:32:15 The importance of acoustic design in theaters 1:34:17 Dogs can hear ultrasonic sounds beyond human range. 1:38:51 Sound needs a medium to propagate 1:40:54 Sound reflection, speed, and characteristics explained Crafted by Merlin AI.00:22 Introduction to the topic of sound and its components 03:15 Sound is a crucial topic with numericals and practical applications. 07:47 Sound is explained through particle vibration 10:13 Understanding the concept of waves and sound propagation 15:17 Mechanical waves require a medium for propagation. 17:57 Sound requires a medium to travel 22:24 Transverse waves involve particles moving perpendicular to the motion of the wave. 24:35 Sound is a type of energy creating sensation. 28:48 Compression region has higher pressure and density 30:53 Analysis of pressure and density relation in wave propagation 35:25 Sound is energy that creates sensation in the ears and can travel as a mechanical wave. 37:33 Characteristic of sound and amplitude explained. 42:15 Loudness is the measure of response of the ear to sound 44:36 Loudness is not the same as intensity. 49:47 Frequency is the number of vibrations per second 52:18 Frequency and time periods are key concepts in wave analysis. 57:03 Understanding the concept of shrillness and pitch in sound. 59:27 Frequency, amplitude, wavelength, and pitch are key factors in determining the characteristics of sound waves. 1:04:18 Understanding the concept of wave frequency and characteristics. 1:06:31 Frequency, period, amplitude, and velocity in sound science 1:11:36 Difference between lightning and thunder 1:13:38 Sound reflects and follows laws similar to light reflection 1:18:18 Understanding sound resonance and how the brain processes different sounds 1:20:37 Understanding the concept of sound reflection and echo 1:25:45 Multiple reflections of sound in practical applications 1:27:59 Understanding the Principle of Reflection of Sound 1:32:15 The importance of acoustic design in theaters 1:34:17 Dogs can hear ultrasonic sounds beyond human range. 1:38:51 Sound needs a medium to propagate 1:40:54 Sound reflection, speed, and characteristics explained

[@rohitwalikar277]

Thank you sir understood all concepts now it's crystal clear 😊. Please share the PDF 🙏

[@aaradhyKatiyar2312]

App se note le lo

[@NaveedMinhas-kt1ep]

Difference between loudness and intensity Loudnes 1 subjective in nature 2 not complete physical quantity 3 depends upon sensitivity of ear 4 unit of measurement dB Intensity 1 objective in nature 2 physical quantity 3 does not depend upon sensitivity of ear 4 W/m^2

[@sauravshaw9140]

You are really a good teacher and can you kindly make a video on vernier calliper and screw gauge Icse 9

[@jannatanwar-xo7ip]

Thank you very much Sir.Very easy concept 🎉🎉🎉

[@abhilashapareek5121]

7:45

[@gayatrinahak777]

Thanks

[@rajuchoudhary1199]

Sir if particles don't move with wave then how is rare fraction and compression being created? Please reply someone

[@PrekshaMohindra]

Particles dont move with the wave but move forward and backward which is basically vibrating...so the particles vibrate and when they move forward (while vibrating) compression is created and then they come back to mean position so rarefaction is created; only the disturbance moves forward (In the new ncert book page 128 propagation of sound)

[@ROBOTICR.G]

sir on 1:23:59 you say that the difference between alex and wall is 17.3 then why in picture u wrote the distance from wall to alex 34.6 m tell me please why

[@ROBOTICR.G]

yes sir why

[@KrishnaTiwari-bp5zw]

Sir what is the difference between echo and reverberation.

[@DishaJagtap-vq5ge]

Thank you, Sir.

[@RajeevKumar-gr4nz]

Thank you sir for this session 😇😇 Understood all the concepts and Notes were being made during class:) Please bring numerical sessions.

[@akul4990]

How to get ppt of this chapter

[@amrithasridhar836]

Telegram

[@Avengers6177]

Sir we want to know about haunted laboratory from you please 😢 Thankyou for this session ❤❤❤❤❤❤

[@bhargav-mh3mx]

yes

[@susmakumari4236]

Sir aapne mosquito ke sound achi nikali by the the way your explanation is too good🎉🎉🎉🎉🎉🎉

[@r.srinivasyadhav8125]

Thank you sir it was very interesting and i understood the concepts very easily

[@Bint_e_islam-s]

Best channel ever today I watched 4 sessions ❤❤

[@AbdulHakeemAbdulHakeem-tx2dy]

Yes sir very easy sound 😊

[@itzams19gaming]

14:39 sir domino’s nahi Doridos😂😂😂

[@DipanshiTehlan-cw2sb]

sir i really felt very bad when you said the sentence "Elvish ke papa ka naam aa gaya dekho" you were my favorite physics mentor till but not now no more this is very shameful to disrespect someone with the reason nothing i don't like this behaviour😞😠😡 sorry if you felt bad but i gave my point of view🙏🙏

[@anjalibabu560]

46:28

[@amanbmanoj6333]

1:12:50

[@archnapandey5485]

Thank you sir for this wonderful session!😃😇

[@NandanirawatRawat-wd3cv]

Sir par Jo rope hai jab vo aage jaega to peeche bhi to aaega

[@aaradhyKatiyar2312]

In rare case it happen

[@AsutoshFoundation]

good teaching

[@HimanshiSadhu9294]

Ok

[@sayedmdtarique3984]

Sir Paad ka bhi amplitude, frequency, pitch, wavelength, hota hai kya?

[@sukhdeepkaur1623]

Plzz bring important questions of all chapters of phy

[@BabliJain-ue1or]

Sir I have question can you explain me what types of sound?

[@Daksh-rs4ou]

sir you didn't cover rarefraction?

[@shashilaxmiyadav7832]

12:54 sir aap aur hmm UP vale h thela hi accha h hamare liye ....😅😅😅

[@yashodast8226]

Thanks so much Sir ❤🎉😊

[@sanjitadasbayan4503]

He roast elvish yadav 😂😂😂

[@ShineOnMotivation-1]

🐒

[@rajeshchaurangpate3535]

Good evening sir I undistand but I don't known how learn formula

[@adarshguhan8157]

Gr8 video ❤

[@luky1276]

Hamko bhi esae hi ek sir pha date hai

[@nandraj7987]

Sir what is crest and trough

[@bipneshbaghel8714]

NEW student 8E sakshi

[@user-kd1cb1vm2g]

Sir aap padahatei kam ho or time waste jada karte ho ( in my opinion)

[@user-bx7zv8wo5l]

We like to study like this only

[@Versatile_Vox]

fr bro wasted like half of the hour yapping nonsense

[@user-jq8sn6ty6j]

​@@Versatile_VoxMind your words

[@vansh-marvelandgaming]

Then study from some other source

[@ShaneYoungGod]

sir why are u struggling so much ?

[@dikshitsanklecha5248]

😂😂😂😂😂😂😂

[@kanikabisht784]

Sir notes pdf

[@dikshitsanklecha5248]

Sound is a energy

[@whatsappuniversity7702]

How sound got trapped in a mobile phone and we can listen it later