SOUND in One Shot - From Zero to Hero || Class 9th

[@PW-Foundation]

Foundation Class 9th Sprint Batch 👉 bit.ly/3VS4OrG 📲PW App Link - bit.ly/YTAI_foundation 🌐PW Website - www.pw.live

[@divyanshsahu3844]

Thank you sir ji

[@Mosinfitmess]

NXT LVL⚡☄️💯

[@geniusnaman2483]

Op sir

[@Savitridevi_3191]

Sir padav batch video kab start hogi

[@piyushritz]

Sir kya aap sample paper solve kr skte h

[@priyankaavatsa2893]

🕯️🕯️Manifesting *95+ in all subjects* 🕯️🕯️ for everyone

[@siddhibhandare8802]

Same!

[@VASHU_FREE_FIRE]

Thanks😂

[@RYZEN5PLAYER]

pass hojau bas

[@SanuSahu-si9vf]

​@@RYZEN5PLAYER😂

[@rajmukhekar7468]

@@RYZEN5PLAYER 10th me jaa raha hai thoda seriously lo! Padhai likhai karo i.a.s.-y.a.s. bano aur desh ko sambhalo Mai bhi pehle waise hi sochta tha magar abhi 9th me pata chala education kitna important hai. Bas pass hone ka goal mat banao. Agar 100% ka goal rakhoge toh 95% to 100% mil jayenge aur 50% ka goal rakhoge toh jaise taise pass ho jaoge ya shayad nhi bhi aur bas pass hone ka goal rakha toh bhagwaan hi aapko bacha paaye

[@kriptokiller8743]

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 🙃

[@aijazahmad3520]

😂😂

[@thetimepassyoutuber2009]

4th law???

[@Teacher-y4b]

Ye badiya tha guru😂😂

[@miniee.69]

​@@thetimepassyoutuber2009law of universal gravitation constant

[@thetimepassyoutuber2009]

@@miniee.69 ok

[@dhpverma3060]

Introduction 00:00-1:00 Based on direction of vibrating particles 1:01 - 6:12 Based on medium of propagation 6:13 - 9:27 Sound wave production 9:28 - 14:44 Sound wave propagation 14:45 - 18:24 Sound require medium to travel 18:25 - 20:22 General characteristics of wave 20:23 - 30:21 Speed of sound wave : formula and variation 30:22 - 32:41 Characteristics of sound waves 32:42 - 39:06 Laws of reflection of sound wave 39:07 - 43:30 Echo 43:31-48:01 Reverberation and how to reduce it 48:02 - 50:40 Reflection of sound based instrument 50:41 - 54:49 Audible range 54:50 - 58:09 Ultrasound and its applications 58:10 - 59:29 Applications 59:30 - 1:04:59

[@Sarthak_Tapkir_2311]

@dphverma3060 aapki exams hui kya??

[@Rohan-o4v]

❤

[@thakur.randhir]

😮😮😮

[@AGGPD_YT]

Copypasta from the description of the lecture 🗿

[@subhambehera825]

Hnn

[@priyanshidadhich9136]

This teacher is why I love PW for any class either 9 or 10.....

[@bluehubgaming2958]

Ok why tf you commented

[@shreshthshauryaahlawat1114]

yup

[@anjanatumsare7842]

blue hub what do you mean

[@arayankamble_0983]

💯

[@aksharachoudhary5838]

​@@bluehubgaming2958 and wtf u have problem 🥱

[@Aayush3111]

Time Stamp :- Introduction 00:00-1:00 Based on direction of vibrating particles 1:01 - 6:12 Based on medium of propagation 6:13 - 9:27 Sound wave production 9:28 - 14:44 Sound wave propagation 14:45 - 18:24 Sound require medium to travel 18:25 - 20:22 General characteristics of wave 20:23 - 30:21 Speed of sound wave : formula and variation 30:22 - 32:41 Characteristics of sound waves 32:42 - 39:06 Laws of reflection of sound wave 39:07 - 43:30 Echo 43:31-48:01 Reverberation and how to reduce it 48:02 - 50:40 Reflection of sound based instrument 50:41 - 54:49 Audible range 54:50 - 58:09 Ultrasound and its applications 58:10 - 59:29 Applications 59:30 - 1:04:59🐾🐾

[@vishnukesharwani8660]

THANK❤❤🌹🌹🙏🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤

[@LGYASH19]

PW is the best education platform I have ever seen . I have studied 1 class (7th) in bujus , 2 class (8th and 9th) in vedantu , but I can assure you that there is no other education platform that teaches like PW . I have planned to take upcoming classes subscription in PW by seeing their explanation in KZbin Exited for 10th class😊

[@aaqifmahboobkhan5670]

Bro you have written exited instead of excited

[@CNNSBRJLNJR]

Byju is also good according to me

[@33-satyamgupta8c8]

free fire khel aur buisness kar kya nakar giri

[@itzallrounder]

​@@33-satyamgupta8c8 shi bola bro , business jaisa Paisa aur power kisi job me nhi h

[@mohitbro-ms]

Time Stamp :- Introduction 00:00​-1:00​ Based on direction of vibrating particles 1:01​ - 6:12​ Based on medium of propagation 6:13​ - 9:27​ Sound wave production 9:28​ - 14:44​ Sound wave propagation 14:45​ - 18:24​ Sound require medium to travel 18:25​ - 20:22​ General characteristics of wave 20:23​ - 30:21​ Speed of sound wave : formula and variation 30:22​ - 32:41​ Characteristics of sound waves 32:42​ - 39:06​ Laws of reflection of sound wave 39:07​ - 43:30​ Echo 43:31​-48:01​ Reverberation and how to reduce it 48:02​ - 50:40​ Reflection of sound based instrument 50:41​ - 54:49​ Audible range 54:50​ - 58:09​ Ultrasound and its applications 58:10​ - 59:29​ Applications 59:30​ - 1:04:59​ Like please 🙏 😢

[@ramakantrai2560]

I hoped that all students will get 96%+in 9th and board examination

[@soumya6908]

Thanks

[@AarushPratap]

TYSM~

[@shiv161981]

L​@@soumya6908

[@MANISHAPandey-o6t]

Time Stamp :- Introduction 00:00​-1:00​ Based on direction of vibrating particles 1:01​ - 6:12​ Based on medium of propagation 6:13​ - 9:27​ Sound wave production 9:28​ - 14:44​ Sound wave propagation 14:45​ - 18:24​ Sound require medium to travel 18:25​ - 20:22​ General characteristics of wave 20:23​ - 30:21​ Speed of sound wave : formula and variation 30:22​ - 32:41​ Characteristics of sound waves 32:42​ - 39:06​ Laws of reflection of sound wave 39:07​ - 43:30​ Echo 43:31​-48:01​ Reverberation and how to reduce it 48:02​ - 50:40​ Reflection of sound based instrument 50:41​ - 54:49​ Audible range 54:50​ - 58:09​ Ultrasound and its applications 58:10​ - 59:29​ Applications 59:30​ - 1:04:59

[@randomstudywithpratishtha7909]

This video introduces the physics of sound waves, including their propagation, classification, and effects on different mediums. It also explains the use of ultrasound technology in various fields, such as medicine and navigation. The video also covers the impact of frequency, intensity, and surface characteristics on sound reflection and reverberation. 00:00 Understanding Mechanical and Non-Mechanical Waves 08:24 Understanding Sound Waves and Propagation 16:47 Understanding Waveforms and Frequencies in Sound 25:15 Understanding Wave Characteristics and Frequency 33:39 Understanding the Impact of Voice Frequency and Intensity on Sound Quality 42:02 Understanding Reflection and Reverberation in Sound 50:27 Understanding the Science of Sound Reflection and Ultrasonic Frequencies 58:50 Applications of Ultrasound Technology in Various Fields

[@srishtirai9606]

Recently I've given my 10th boards and I'm here because class 9th physics is basics of class 11th and I've not studied a single word from this chapter 😭 So ya to all my juniors if you wanna take science please study all chapters properly and try your best to clear your Doubts and ya marks doesn't matter it only matters for Boards so please don't get upset or demotivated if you won't be able to score good marks I myself had scored 75% in 9th but hopefully I'll score farrrrr better in 10th. So ya study hard take care. Okay Guyss so I got 95% in 10th.

[@Sujaankhan77]

Same here . Mai to AMU entrance ke liye aayi hun😅

[@sanjiwkumarsingh5119]

Koi baat nhi ❤

[@harrys_love]

Can u tell me if we take science in 11th then is it necessary for the maths basics to be also cleared? 😭

[@Deep_codm]

​@iamsamridhiiHi

[@harrys_love]

@@Deep_codm hey

[@Trooper122]

Time Stamp :- Introduction 00:00-1:00 Based on direction of vibrating particles 1:01 - 6:12 Based on medium of propagation 6:13 - 9:27 Sound wave production 9:28 - 14:44 Sound wave propagation 14:45 - 18:24 Sound require medium to travel 18:25 - 20:22 General characteristics of wave 20:23 - 30:21 Speed of sound wave : formula and variation 30:22 - 32:41 Characteristics of sound waves 32:42 - 39:06 Laws of reflection of sound wave 39:07 - 43:30 Echo 43:31-48:01 Reverberation and how to reduce it 48:02 - 50:40 Reflection of sound based instrument 50:41 - 54:49 Audible range 54:50 - 58:09 Ultrasound and its applications 58:10 - 59:29 Applications 59:30 - 1:04:59 😊😊

[@sunitaparshuramkar9102]

Smajhna hota to ham school me hi samajh jate but a student wants: No syllabus completion ki jaldi Personal atention A teacher who can understand our feelings A teacher jo doubt puchne se pehle hi samajh jaye PW IS EMOTION❤

[@Zalvynox]

YES BRO PW IS LOVE ❤❤❤❤❤❤❤

[@digitalasvlog8837]

Yes bro pw is emotion

[@bhawamsharma2456]

59:12 best part 😂 notes bana Raha tha yeh sunkar hassi chut gayi vah sir 😂

[@leopardgamerz9095]

Kya funny hai?

[@Do_not_memorise]

Your sacrifices don't go unnoticed Sir. You are making a huge impact on us I couldn't imagine where I were in these vast physics without you Thank you so much sir ❤🙏

[@Testhowmuchyouknow]

Not only you but all the students who want to learn

[@Sarim_malik]

Dam

[@gagansingh_ix-d9582]

I love how he teaches with all kinds of sounds from his examples

[@riiya._.singh28]

Indeed

[@unknown.3147]

Gagan bhai aaur ho gaya final paper mera kal hae

[@sherrythakur]

Mera bhi

[@janviverma1239]

Write bro❤

[@JoyMandal-v2p]

​@@janviverma1239❤❤

[@sohamghumatkar8971]

The Best Teachers, I'm gonna buy the Next 2023 10th Batch, Hope it comes out soon..🔥 Regards, Soham

[@shouryagoel7993]

Me too

[@theonlyonegamer4065]

Same bro

[@adityanand1214]

Me too bro

[@ayushman2595]

Steroid

[@shreyayadav6264]

Me too

[@RISHABH-077-FF]

😊😊😊😊 1:05:39 bahut acha

[@madhuvyas9990]

You made physics interesting and understandable sir 👨‍🏫😄

[@Mysticshubh]

I wish after watching this lecture i will score more than 95 %😃

[@samarsaysyouaremf8097]

😑

[@bluehubgaming2958]

How many do you got

[@bluehubgaming2958]

@@samarsaysyouaremf8097 this nigga serious

[@swatikumari9396]

U can't score 95% after watching only 1 ch 😂

[@skarmy0.332]

@@swatikumari9396 you are right

[@LGYASH19]

I haven't liked physics but after sir's explanation , maths and physics are my favourite subjects😊 . So i think i should choose maths stream

[@hbplayz4428]

Will get to know after 10th with maths (standard not basic)

[@VarshaUpadhyay-w9w]

I also

[@ambujpandey419]

Aa jaa bhai tu bhi aa jaa maths me. Mera bhi 10th tak maths me bahut interest tha isliye maths stream le li and maths hamare le rha h

[@Sujaankhan77]

​@@ambujpandey419same 😅😅

[@Chirag-y1t]

​@ambujpandey419 😂😂😂😂😂😂😂 baat to sahi hai 😢😢😢😂😂😂 yaar

[@GaganKumar-mg5si]

Thankyou sir i was waiting because tomorrow is my exam😊😊😊

[@gentleadi23]

@@roshsinghrajput nice videos 🥺🥺bro❤️❤️ subscribe to his channel 🤞🏻🤞🏻🤞🏻

[@mrabhiyt2045]

Same bhai

[@vinaychoudhary2697]

Literally me also

[@oopsmilegamer8490]

Me also

[@parthjaiswal1832]

Aaj Mera science ka hai

[@InfiniteImmersive665]

Time Stamp :- Introduction 00:00 Based on direction of vibrating particles 1:01 Based on medium of propagation 6:13 Sound wave production 9:28 Sound wave propagation 14:45 Sound require medium to travel 18:25 General characteristics of wave 20:23 Speed of sound wave : formula and variation 30:22 Characteristics of sound waves 32:42 Laws of reflection of sound wave 39:07 Echo 43:31 Reverberation and how to reduce it 48:02 Reflection of sound based instrument 50:42 Audible range 54:50 - 58:09 Ultrasound and its applications 58:10 Applications 59:30

[@Creator-Your-Type]

😂

[@InfiniteImmersive665]

what@@Creator-Your-Type

[@harshitadua5539]

Time Stamp :- Introduction 00:00-1:00 Based on direction of vibrating particles 1:01 - 6:12 Based on medium of propagation 6:13 - 9:27 Sound wave production 9:28 - 14:44 Sound wave propagation 14:45 - 18:24 Sound require medium to travel 18:25 - 20:22 General characteristics of wave 20:23 - 30:21 Speed of sound wave : formula and variation 30:22 - 32:41 Characteristics of sound waves 32:42 - 39:06 Laws of reflection of sound wave 39:07 - 43:30 Echo 43:31-48:01 Reverberation and how to reduce it 48:02 - 50:40 Reflection of sound based instrument 50:41 - 54:49 Audible range 54:50 - 58:09 Ultrasound and its applications 58:10 - 59:29 Applications 59:30 - 1:04:59 Best of luck❤

[@fairy._.dimples]

Best physics teacher ever!! I was listening to you sir and my mom said, "I wish we had a physics teacher like him, it would've been so fun to study physics." Thank you so much sir, you have really made physics easy for me🙏

[@Secret_sunshine408]

😮

[@YouTubeer970]

Physics is easy 😅😅😅😅so tell me what are integrals in physics 😢😂

[@the.bachhu_01]

Rajwant sir be like😢😢

[@MohdAshraf-cc5mp]

😮😮😮

[@Shubiee210]

44:43 reflection me aayega ‘Jethalal......jethalal.......jethalal...’😂😂

[@Yashika_shrinet2010]

Now i realize that , how physics and physcwallah is the best ❤👌🏻👍🏻

[@preciousartcraft5304]

Rakshak sir thanks a lot U are the only one who can made me clear in class 9 physics may lord give u good health ❤❤❤

[@Yt_useer]

Thank you sir. I have studied my whole 9th class by your videos ❤ and a very happy new year please give heart(❤️)

[@jarnelsingh075]

Thank you so much for being with me in my whole 9th class journey

[@user-px6td3jz7e]

Thank you sooooooo much sir!! You are one of the best teacher!!!!!!! ❣️❣️ It is helping me a lot in my revision!❤️

[@Mysticshubh]

@@singhdigvijay1975 wah beta kuch padh liya karo nahi to fir fail ho jaoge 🤣

[@user-px6td3jz7e]

@@Mysticshubh exactly 😂😂

[@Mysticshubh]

@@user-px6td3jz7e 😅 ✋

[@bred3620]

tumlogo ne revision bhi start kar liya 😢

[@bred3620]

@@singhdigvijay1975 sharm kar bhai ladka hai wo 🗿🗿

[@ramnarayanroy6824]

Happy Teacher's Day sir you helped a lot in physics when I was in my 10th class in 2023 I give my board exam and I am here today 5 September 2024 for wishing you a very happy teacher's day once again thank you rakshak sir 😊🙏🙏💓💓

[@Preetisam]

Kohli ka birthday

[@_SamThomasJohn_]

Thank you Rakshak Sir, you made physics so fun !

[@kratikatiwari5073]

I watched a video first time on PW and i really like explanation of this ch i dont know about other chapters because i already study those ch by other channels And I also thought that ki mujhe shayad baki ch bhi yhi se pdne chahiye the I will try this in my 10 standard ☺️☺️

[@Expert_yoyo]

44:42 Babita ji on toilet 🚽😂😂😂😂😂😂😂😂😂😂😂😂 koi jetha ji ko batao😂😂😂

[@daksh8398]

😂

[@Shadow07Official]

very amazing sir your are best teacher of physics 😇😇😇

[@shivkumarkaushal6566]

Thhhhhaaaaaannnnnkkkkkkk yooooooouuuuuuuu siiiiiiiirrrrrrrrrr❤🧡💛💚💙💜🤎🖤❤🧡💛💚💙💜🤎🖤❤🧡💛💚💙💜🤎🖤❤🧡💛💚💙💜🤎🖤

[@aayana13_4]

Sir u made me love with physics till 8th i felt that I can't handle physics but when i watched your lecture in the beginning of this session....slowly and simultaneously physics was one of my favourite subjects ❤️🔥 i used to watch lectures of yt only but this year i purchased the batch NEEV -2024 and didn't regret at all ❤️❤️ Thankyou PW

[@PiyushKumar-nl2si]

Ohh you are good in physics

[@PiyushKumar-nl2si]

Then can I ask a question ❓❓

[@aayana13_4]

@@PiyushKumar-nl2si yupppp

[@PiyushKumar-nl2si]

@@aayana13_4 what is formula of gravitation acceleration when we go to h hieght ❓❓

[@VijayKumar-yq9xv]

Your chuche bahut Accha hai

[@user-um7jo3zf5e]

Mind blowing lecture sir

[@jahnavi44]

Sir mai ye video raat ke 3 bje dekh Rahi hu or aap itne interesting way main padha rahe ho ki mujhe bilkul neend bhi ni aari h bahot funny or mazedaar way main padhaya aapne or jab mai khud ya teachers se physics padhti hu to itni boring lagti h but Aaj ni lagi. Thank you so much sir🙂

[@k.pop_lover-honey23]

Sir washroom me baat Karne wale like karenge😂 Exam wale bhi 40:57

[@ayushi0099]

I enjoyed and learned so much from you , i think you are the best physics teacher 💗💗 you are the best , you clear my whole physics concept in just minutes 🎉🎉🎉❤❤❤❤❤ A great thank you sir ☺️☺️☺️☺️☺️☺️❤❤❤❤❤

[@_Divyanshu_Raj]

Sir please provide numericals sessions of all previous chapters (motion ,force and laws of motion, gravitation, work energy and power and sound) Sir your all lectures are outstanding and understandable and I wish that you will provide numerical session for us that will also become so much outstanding. Sir please provide numerical session for us many students are waiting for this.♥️

[@jnlbc]

Yess If you get from any other source help me too please

[@HarshSingh-r5z]

Sir... Types of wave:-- • Mechanical wave • Electromagnetic wave

[@yashkarpe33]

Hard Work always pays 💯💯

[@MiNi4FLAG-GaMEr]

Smart work?

[@AdityaThakur-io2zp]

I love the way fo teaching and treat pw channel as a family 😇 I hope you will also teach us in our 10th class 😍

[@RamanShah-dd6ry]

You are the best teacher in whole world 🌎 of physics 😊❤ Thankyou so much sir ❤❤😊😊

[@iris9037]

I have never commented on a study realated video before but gotta say i can not be more thankful to sir i was failing physics at the start of this year tried tuitions,every youtube channel but nothing worked but one day i randomly clicked on a PW video from sir and it truly changed the way i looked at this subject and i scored 48/50 in physics and chemistry in half yearlies and it is now easier for me to look forward to my dream of becoming a doctor thank you so much sir .....honestly

[@LGYASH19]

Same to me also , I haven't liked physics but after sir's explanation , maths and physics are my favourite subjects and he has also helped me to choose maths stream 😊

[@Shruti_tripathi_456.]

​@@LGYASH19❤

[@Gaurik861]

Tabhi tumne itna bada para likh diya 😂

[@miramalliksaha1423]

9:19 ka glitch dekha tum logo ne😂

[@OsmanEditzByUmar]

Firstly thank you sir I always take your lectures according to my routine But sir you are not just a teacher for us You are everything in this field Thank sooo much sir 🤝 1:05:34

[@AshutoshPanigrahi-o3r]

Best physics teacher ever! . Thank you so much sir, you have really made physics easy for me🙏. I got 98 % in my physics exam.

[@AdarshSharma-w1e]

02:47 was dark

[@juhikumari8966]

Really, jitna bolo uthna kam h. You all are unbelievable. Thans for your support . I will be forever grateful to you. 💖💖💖

[@finisherff4610]

This man make physics really understandable to me!!! 👍💗

[@Anubhabbb]

Tumhara exam hai 2 ya 3 din mei

[@Dikshat7]

​@@Anubhabbbnhi broo😂

[@GaneshJoshi-b6q]

44:45 this sound was personal 😂😂

[@DEVILGAMING-cg7co]

37:38 the unit of intensity is watt/metre^2 and decibals is the si unit of loudness

[@aadeshbansal4455]

Sir glt padha rhe h kya?

[@SHARK-TANK_.JEEexam._DO-or-DIE]

Ha to Bhai Energy/Time hota hai Power isiliye SI Unit Watt hai. Aur Area ka hota hai m². Isiliye chahe Joule/secm² ya Watt/m² likho baat to Ek hi hai.

[@DEADEVIL17]

This sprint series helped me a lot sir . Thanku for teaching us 💗💗

[@Factogist]

Thank you so much for being with me in my whole 9th class journey😀

[@nikhilupadhyay8266]

Hlo ur in class 9.

[@nikhilupadhyay8266]

And ur youtuber

[@nikhilupadhyay8266]

Rashak sir se tum bhi padhte ho

[@akashirose]

A great teacher on KZbin hat's off to you sir 💜

[@dancefitwithshefali9699]

Yupppp.... 💜💜💜💜

[@AKGAMER-xg9mc]

Hello

[@AKGAMER-xg9mc]

​@danchiiiefitwithshefali9699

[@shalineesrivastav7841]

It hits different while watching it 1hr before exam..

[@devashidubey4369]

bhai us moment ho gya

[@rashidsofi1670]

I wish that every student will do best in their exams 😊😊

[@lenovokushwaha4683]

the teacher who give us feel of physics ⚛

[@srijanthakm1540]

I know you guys have exam tomorrow or within one week all the best may all bulls get 90 percent😂😂😂

[@ShubhangiD-bn2mf]

Thanks pw for this series it help me a lot to understand and clear the concepts....... I love each and every lecture of this series ❤🙏

[@bestofshorts9437]

Newtons fourth law of motion says that books will remain at rest until and unless an internal or external exam occurs and the turning of pages is directly proportional to the syllabus to be covered and the stress in mind remains constant

[@Rajeeb_]

Gravitational law kidar gaya 😂

[@sigmayour123]

Cause you don't respect your parents money

[@Adarsh21251]

😂😂

[@cubing_king8]

Thanks you so much for this wonderful session 😢😊

[@indiantheme1]

Bhai yaar editing aur cubing chhod ke padh rahe ho😮

[@AmazingFactsWorld726]

very very great explanation i thought that in 1 hour i would not get but after watching this i had read book and i got almost every topic of this chapter THANK YOU PW FOUNDATION.

[@izanamii21]

Really helped clear the concepts. Thank you so much!!

[@medhanshgupta5979]

wakata

[@rammilan5053]

Thankyou sir and all pwians ❤❤ Because I am belong to middle class family so can't afford the coaching fee 😢 I am studying on your free platform and getting good score in my class and I believed on all pwians because in your presence anybody can't fail me😊😊

[@Somo_momo]

Sir we all love your teaching ability. from all students.thanks sir 🎉🎉 .thank for everything doubt clearing video ❤❤

[@PriyaKumari-jr4wh]

Thank you sir... I thankfull to you with my whole heart ❤️...you are the no. 1 teacher Of physics in this universe....

[@AniketKushwaha-ph3fu]

2:11 ☠️☠️😈😈

[@VSMGAMINGS4977]

Dirty mind😂😂😂 nauthy boy

[@Funkeyz_Official]

Thankyou soo much PW and Rakshak sir for making my class 9th this easier...... I really not learnt anything from my school but by PW and youtube I completed my class 9th and also I'll study from PW and KZbin In 10th.....best of luck guyzz for 10th class

[@anshjha8656]

Much better than other education platforms

[@vaibhavdeep3639]

But.... Respect 🙏 for all teachers

[@digitalasvlog8837]

But respect all teachers

[@Iamuzthakur9211]

My final exam are done 😊but I"am here to like this video😍

[@s.stglobalstudies12]

Completing whole science two months before exam. Provides feel of relaxing mind. 🎉🎉🎉🎉

[@sahilGamerz12322]

Physics is crazy 😃

[@sanandaartcraft1647]

Thanku sir for such a beautiful speechless explanation❤️.you are one of the best teacher in the world because of yor determination and hard work😊🙏

[@aryanrajpoot8130]

Thank you sir😇😇👍 Your revision series are Awesome👏

[@ankitasharma-4951]

38:31 kan behe jaega was funny

[@Dr.JatinMehla]

22:26 22:27 22:27 22:27 😂😂😂😂😂😂😂😂😂😂😂😂❤

[@purveshkolhe237]

I was waiting a lot for this lecture.... And he presented it so awesome. Loved it.... Literally great!!

[@Myst_Girl]

Sir physics ke chapters khatam ho gaye h plz ek video important terms pr bhi daal do jo exam me help kare humari 💫

[@QueenAmayra143]

Thanku soo muchh sir for this masterpiece!!🥺❤️ you really make me from zero to hero inn 1 hourr!!🥺❤️ again thnkuu🥺❤️

[@ananyatripathi4324]

Thank you Sir 😊 You are really our rakshak .🙂🙃

[@ceoofindia9382]

I have finally completed my Physics syllabus with the help of Rakshak Sir. Last year, I was in ICSE and I never got good marks in Physics, but this year, I got very much interested in Physics because of Rakshak Sir and I have topped in my Physics exams this year. I stopped cramming Physics and understood it. This was a great year so far because of PW. I will miss this time forever :(

[@ChuziGamingShorts]

Oooho

[@Satnamwaheguru-vg3ut]

I also top in my class in only science exan😊😊😅😅

[@Jain_pratima]

​@@Satnamwaheguru-vg3ut😅

[@lakhansinghbagri3300]

Mee too

[@DevanshuAbrol-mf8yf]

8:25 Op😂😂

[@JassiratSinghChhabra]

33:31 sir didn't even hesitate💀

[@AdityaPatel-r6m]

41:48 Sir kya normal line perpendicular hoti hai. If someone knows please help 😢

[@aanchalthakur235]

Yes, the laws of reflection of sound are similar to that of light. In both the cases, the normal is perpendicular to the surface.

[@airborn688]

Yes

[@u.n.i.]

Amplitude. This portion need not be confused by students here. The left right hand gesture made by the instructor here is to depict the magnitude of amplitude and need not be confused ( don't assume it to be wavelength) It is the variation in pressure that he represents... ordinarily the gesture would mean the wavelength ( pl see the propagation of sound wave portion shown here) The graph is time to pressure graph. Also higher amplitude means higher pressure and louder sound. Pressure/loudness does not seem to have anything to do with wavelength, but amplitude

[@Rohanverma26]

Thank you sir for all the lectures. This was definately an amazing journey with you for class 9th (I only studied physics from your lectures) which gave me a keen interest in the world of physics. Till then sir, I hope to study with you in class 10th too! Thank you sir for your hardwork and efforts.

[@idontknow-fu7be]

Samee heree btw can we be friends??

[@mokshyt4502]

​@@idontknow-fu7bewe be?

[@Shubhamyadav-gx8qq]

Everything is temporary but that schl wali mdm is permanent 😂👉🏻👈🏻

[@UPSCAspirant_786-d7c]

This journey was amazing....we still use to watch these lectures during exam......after 1 year ....... Thankyou so much team of PW.....

[@RajdeepKalita-v3g]

Thank you sir for making our 9th journey of physics so easy and smooth ❤

[@Wangpan-ck6ic]

Sir, your instructional approach is notably comprehensible and user-friendly.

[@karamchandbansal3162]

This video is worth watching✨ Thank you sir..in just 1 hour 5 minutes,you made us understand this chapter Worth a watch and a like🙌💓

[@harshlearningplatfrom362]

a teacher who give us feeling of physics

[@rajeshram82812]

Everything is temporary, But Sir ka explanation is Permanent🥵🔥

[@Fankai0]

😵

[@skarmy0.332]

🌞🌞🌞🌞

[@kanak_561]

Thank you sir for understanding important topics of this chapter🎉now I ame prepared for my examination 🎉😂thak you sir