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Sound in One Shot | Physics - Class 8th | Umang | Physics Wallah 

Physics Wallah Foundation
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📝 For complete notes of Lectures, visit Umang Batch in the Batch Section of PhysicsWallah App/Website.
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▶️Complete CLASS 8TH - SCIENCE ONE SHOT Lectures - • Science - Class 8th NCERT
In this lecture of Umang batch, Alok sir is going to teach you the chapter-Sound.
Topics covered in this lecture are-
•Sound
•How is sound produced
•Medium of propagation
•Amplitude, Frequency, Loudness, Pitch
•Noise, Noise Pollution
There are many other important chapters that we are going to cover in upcoming videos for class 8. Stay tuned with PhysicsWallah Foundation.
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🔴 Details about the batch -
• Recorded Lectures for Class 8th Students.
• PDF Notes of each Lecture will be available on the PW App.
• Weekly Lecture Planner will be uploaded on PW Foundation Community Page.
• Classes will start from 10th January and we will cover the whole syllabus by 10th March.
🎦 Eight Lectures per week will be uploaded.
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#Science #Class8 #Umang

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11 сен 2024

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Комментарии : 6 тыс.   
@sayyadagufrana8358
@sayyadagufrana8358 7 месяцев назад
Who 🤔 is watching this in 2024😊
@animebuster4561
@animebuster4561 7 месяцев назад
Iam
@RinkuKumari-db7ei
@RinkuKumari-db7ei 6 месяцев назад
Me
@EryaPlayzZz
@EryaPlayzZz 6 месяцев назад
Me😂
@Vinaykumarashah
@Vinaykumarashah 6 месяцев назад
Me
@We_R_Family
@We_R_Family 6 месяцев назад
Me
@Flugo_shorts
@Flugo_shorts 27 дней назад
Kon kon half yearly ka liya padhna aaya ha
@Rohitplays12
@Rohitplays12 27 дней назад
Mee bro😂
@Blacksamurai7777
@Blacksamurai7777 20 дней назад
😊me bro😊
@sakchham4976
@sakchham4976 20 дней назад
Me😂
@amritareyanshsingh6603
@amritareyanshsingh6603 11 дней назад
after halfyearly
@kpltiktokgirls6966
@kpltiktokgirls6966 10 дней назад
😂me
@mdamanfarooque798
@mdamanfarooque798 Год назад
How many of u are here to complete syallabus as fast as possible to enjoy the left months..... 🤤
@Rekhasfun
@Rekhasfun Год назад
0
@jaspalkrasra6891
@jaspalkrasra6891 Год назад
Meh!
@revangaikwad6900
@revangaikwad6900 Год назад
Baji same me bhi
@PawanKumar-xi9gs
@PawanKumar-xi9gs Год назад
Me 🤘😎
@chillingstorms785
@chillingstorms785 Год назад
Na bro iam are here in my exams bcoz i enjoyed the whole season :)))
@bhagirathmal6160
@bhagirathmal6160 8 месяцев назад
42:41 Nunber of oscillation = 20 Frequency = Totam Oscillation/Time taken = 20/1Hz ={20Hz} Ans 😊😊😊 48:44 Paisa hi paisa hoga 😂😂 Pw is better than school 😂😂😂😊
@kutkutjangid112
@kutkutjangid112 8 месяцев назад
48:41 Paisa hi Paisa hoga
@kutkutjangid112
@kutkutjangid112 8 месяцев назад
Shai me yaar pw is better then school
@bhagirathmal6160
@bhagirathmal6160 8 месяцев назад
@@kutkutjangid112 right ☺️
@Nileshgreninja-
@Nileshgreninja- 8 месяцев назад
School ko chhod do😂😂
@bhagirathmal6160
@bhagirathmal6160 8 месяцев назад
@@Nileshgreninja- ha but phir ye society nahi jine degi bolegi ki dekhi school chhod jar beth gayi 😒😒
@manojsirohi3309
@manojsirohi3309 Год назад
Salute to our physics wallah teachers 👏👏 Sir is quite sick 😷 but still teaching us😊
@dileeptiwari2075
@dileeptiwari2075 9 месяцев назад
How you now
@anoovisharma1171
@anoovisharma1171 8 месяцев назад
he was coughing several times in the video madam@@dileeptiwari2075
@SohamSalunkhe-i1o
@SohamSalunkhe-i1o 8 месяцев назад
Ya they were coughing
@preetysathe20106
@preetysathe20106 7 месяцев назад
Sick yet teaching with SMILE
@user-wc6dt5sz2l
@user-wc6dt5sz2l 6 месяцев назад
What is vacuum
@MasterVed
@MasterVed 9 месяцев назад
Exam ke ek din phele aake padhne wale like karo jaldi😂😂❤
@Speedreaction2345
@Speedreaction2345 6 месяцев назад
sirf tu hamare jaise log nhi
@Samadnya_D
@Samadnya_D 6 месяцев назад
Correct😂
@dipalideshpande9603
@dipalideshpande9603 6 месяцев назад
1 din pehele nahi bhai 4-5 ghante pehele 😂😂
@SHADOWASSASSIN-bo8kz
@SHADOWASSASSIN-bo8kz 6 месяцев назад
same ​@@dipalideshpande9603
@mainabaiparmar7317
@mainabaiparmar7317 5 месяцев назад
Present
@manasakulkarni8752
@manasakulkarni8752 Год назад
0:23 I literally thought that my speaker ripped off😅😂😂😂
@ganeshwarprasadsingh4745
@ganeshwarprasadsingh4745 11 месяцев назад
😂
@kantamishra6125
@kantamishra6125 11 месяцев назад
😅am also thought that my speaker ripped off
@naveennegi1315
@naveennegi1315 11 месяцев назад
Same😂😂😂😂😂😅
@abirsworld5909
@abirsworld5909 11 месяцев назад
I thought that it is muted for copyright😅😅..... and also fast forwarded to listen 😅😅😅😂😂😂
@itz.alluringGirl13
@itz.alluringGirl13 11 месяцев назад
True
@akanksha5459
@akanksha5459 6 месяцев назад
Kis kis ko ye lga tha ki hamer phone ki awaj chali gayi
@vrijenderpawar6199
@vrijenderpawar6199 6 месяцев назад
Yeah
@kuwaitkuw4352
@kuwaitkuw4352 Месяц назад
Merko
@AdityakumarSingh-rd8ur
@AdityakumarSingh-rd8ur Месяц назад
Muja
@cubeking_4567
@cubeking_4567 25 дней назад
Mujhe
@lalita9891
@lalita9891 14 дней назад
Me
@Krishna_gupta_7777
@Krishna_gupta_7777 Год назад
1 oscillation Frequency=(total oscillation) upon (time taken) = 20/1 Hz =20 HZ Ans pw best 😊😊
@Sonam.5098
@Sonam.5098 8 месяцев назад
Hi
@motivation7543
@motivation7543 7 месяцев назад
@@Sonam.5098hi
@Tag-ffpro
@Tag-ffpro 6 месяцев назад
Hello
@neetatiwari1500
@neetatiwari1500 Год назад
No. of oscillation=20 Frequency= oscillation/time period 20/1 =20hz
@HinduGuy108
@HinduGuy108 9 месяцев назад
Thank you 😄
@shinyreddy4838
@shinyreddy4838 9 месяцев назад
Aloki sir
@rajnishofficialff4800
@rajnishofficialff4800 Год назад
Backbenchers are watching this video before exam 🙂
@aditikumar1313
@aditikumar1313 Год назад
I watching this 45 days before exam
@satyendrakumar1283
@satyendrakumar1283 Год назад
Me too but 17 days before😂😂
@Dronegameryt
@Dronegameryt Год назад
Backbenchers paste bhi hai
@RenuYadav-1234
@RenuYadav-1234 Год назад
Me watching a day before exam
@Sana_690
@Sana_690 11 месяцев назад
Yes me watching this video before exam my exam is started yesterday
@KiRA......
@KiRA...... 8 месяцев назад
Nice explanation 👏, I completed 8th grade 7 years ago, but still, watching this video takes me back. Videos by PW and other things on internet are easy for today's 8th graders to use. At that time, we didn't even know what a video lecture was 🗿.
@ankisingh4560
@ankisingh4560 8 месяцев назад
Hlo
@pluto-lq4cn
@pluto-lq4cn 7 месяцев назад
looks like a skill issue
@Vardhanraj893
@Vardhanraj893 7 месяцев назад
​@@pluto-lq4cnyes right
@aqilahmed-ly2ze
@aqilahmed-ly2ze 6 месяцев назад
U don't know lecture😢😢. Ok senior
@KiRA......
@KiRA...... 6 месяцев назад
@@aqilahmed-ly2ze I discovered about LECTURES in 12th standard 💀
@artisticsaniya14
@artisticsaniya14 Год назад
1 second= 20 oscillation Frequency= Oscillation / Time taken = 20/1 = 20 hz Because the number of oscillation made by an object in 1 sec is called frequency
@Codm_Lovers
@Codm_Lovers 11 месяцев назад
My answer is same too
@sakshamsamarthsrivastava2838
@sakshamsamarthsrivastava2838 11 месяцев назад
mera bhi yahi answer aya hai
@lakshmiramesh33
@lakshmiramesh33 11 месяцев назад
20/1 is = 0.05 Hz not 20 Hz
@artisticsaniya14
@artisticsaniya14 11 месяцев назад
@@lakshmiramesh33 No you can check formula
@amhearts1314
@amhearts1314 10 месяцев назад
@@lakshmiramesh33 you are dividing 1 by 20(1/20) ... we have to divide 20 by 1(20/1) and which becomes 20 that means 20hz is the correct answer
@technicalgamerhibo6003
@technicalgamerhibo6003 Год назад
Very pleasant video and very useful for back benchers for last days of exam
@sabinakousar9281
@sabinakousar9281 11 месяцев назад
😂
@shayri_ff-lover
@shayri_ff-lover 10 месяцев назад
But why back benchers come to see this video? They did not have time.
@fggyffffg9542
@fggyffffg9542 9 месяцев назад
​@@shayri_ff-loveri m also back bencher tomorrow is my exam and i want 35 makrks out of 100😅😅
@Zerox_Playz_
@Zerox_Playz_ 9 месяцев назад
​@@fggyffffg9542me also
@Alok_kumar57
@Alok_kumar57 7 месяцев назад
Yess😂🙂
@geetashree6948
@geetashree6948 Год назад
20 oscillation per second is 20HZ
@jatin1741
@jatin1741 Год назад
correct
@jainabshahnaj878
@jainabshahnaj878 Год назад
Yes
@Islamickayi786
@Islamickayi786 Год назад
Sir mera bhi ye answer hai
@abbishek5511
@abbishek5511 Год назад
0
@ashutoshrai7441
@ashutoshrai7441 Год назад
Yes
@arjunaphysics4116
@arjunaphysics4116 Год назад
It is one of the best platform in India ❤️
@armygirl9305
@armygirl9305 Год назад
My exam is tomorrow but I don't understand this topic so here I am at the last movement😅
@rakshakdua
@rakshakdua 2 года назад
Happy Birthday Alok sir.. you are op 🚩
@alokpratapchoubey6329
@alokpratapchoubey6329 2 года назад
Thank you sir 🥳❣️
@shreyanshisanodiya5684
@shreyanshisanodiya5684 2 года назад
Happy late birthday sir 😊😁. Your teaching is awesome.
@eklavyaexperimenthub2490
@eklavyaexperimenthub2490 2 года назад
Rakshak sir, Aapka Kab hai?
@user-cd1py2nx1x
@user-cd1py2nx1x 7 месяцев назад
Thank you 😊 so much sir.... for this type of explanation I read this chapter from one month but 😢I can't understand but I see this video I understand 😊 so fast again thanku 😊 sir ❤
@user-ri3zl6sz3k
@user-ri3zl6sz3k 10 месяцев назад
Sir this just a fabulous class it works just before one day of exam 😅
@garvjindalarts2009
@garvjindalarts2009 Год назад
Paisa hi pasa 😂 hoga sir I must say you and all teachers are teaching us very deeply we understand clearly because all speech peace full and something funny so we understand clearly
@shamsunder3465
@shamsunder3465 11 месяцев назад
noupee paiisaa hi paiisaa hoga babu bhaiyaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa uhhh.......................... actually thodaaa zyada hi hogya ..................butt koii na oyeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee.........................................................................................................................................................................................................................................bi
@_roygamern_2885
@_roygamern_2885 11 месяцев назад
Thora paisa mere liye bacha ke rakhna
@artikushwaha5077
@artikushwaha5077 8 месяцев назад
Finally fund that comment and yes u are right 😂❤💜
@topis...1704
@topis...1704 Год назад
42:43 20 hertz is the answer
@GoogleMeetServices-uz6gw
@GoogleMeetServices-uz6gw 7 месяцев назад
10:36 Scale Tut Gya Sir 😂
@DeepakKumar-uw5hg
@DeepakKumar-uw5hg 6 месяцев назад
Scale par “made in China” likha tha kya
@GoogleMeetServices-uz6gw
@GoogleMeetServices-uz6gw 6 месяцев назад
@@DeepakKumar-uw5hg JI BILKUL 😅😅
@AdityakumarSingh-rd8ur
@AdityakumarSingh-rd8ur Месяц назад
😂😂
@rajnandiniverma
@rajnandiniverma Год назад
Me watching 👀 this video as tomorrow is my exam thank u so much sir my all doubts are clear🤗🤭
@a_s_king2752
@a_s_king2752 Год назад
Hii
@dheerajsharva3048
@dheerajsharva3048 2 года назад
Sir, Please make the video of L-16 Star and Solar System
@vittamsettigyansrisathvik5157
Ans:20 Because in definition of the frequency, they have written that ,The number of vibration experienced by a vibrating body is known as frequency
@chhaviyadav3563
@chhaviyadav3563 Год назад
20Hertz
@rajupatil2223
@rajupatil2223 11 месяцев назад
Try in hi Lee iq
@nidhibisht2542
@nidhibisht2542 6 месяцев назад
In this Akshay Kumar said paisa he paisa 😂😅
@PREETAM_123
@PREETAM_123 6 месяцев назад
Oscillations =20 Total Time = 1 second Frequency = No. of oscillations ______________________ Total Time F = 20/1 F= 20 Ans:= 《20Hz》
@Divya-be9zm
@Divya-be9zm 10 месяцев назад
10:02 😂😂😂😂😂😂
@The_Death_Adder
@The_Death_Adder Год назад
REALLY ! If they were in place of our teachers everyone would top :-) 🥺
@manishapathare8699
@manishapathare8699 Год назад
yes
@arifa_arshad001
@arifa_arshad001 Год назад
Yes 🥺
@sanjusinghsengar3304
@sanjusinghsengar3304 9 месяцев назад
Alakh sir's teaching style be like: So beautiful So elegant Just looking like a wow.....😅😜😘😘 Thanks sir.....💓💓
@anjumfromgmssoura1227
@anjumfromgmssoura1227 15 дней назад
Sound is a form of energy which makes us hear and travels in the form of waves. Sound is produced by various sources. Though sound is mechanical in nature, its perception is, of course, largely physiological. Hope it helps❤, like ka button dabadena agar ye useful laga hoga😂😅 👇
@sarthakverma1702
@sarthakverma1702 2 года назад
I like this very muchh "hello baccho" Very Motivational Really want to study from alakh sir 😀😀
@k.aakankshreddy2877
@k.aakankshreddy2877 2 года назад
Me too
@pitambaryadav6602
@pitambaryadav6602 2 года назад
Hii sir
@pitambaryadav6602
@pitambaryadav6602 2 года назад
Happy teachar
@binitasingh1512
@binitasingh1512 Год назад
It's alok
@sarthakverma1702
@sarthakverma1702 Год назад
@@binitasingh1512 I m talking about Alakh Pandey sir
@smileex-menclub1851
@smileex-menclub1851 Год назад
1 oscillation - 1hz Frequency = (total oscillation ) upon( total time taken ) =20 oscillation =1. Hz Ans = 20 hz
@ayucrickeditor
@ayucrickeditor 9 месяцев назад
Good, friend.
@user-nd1np9dp3m
@user-nd1np9dp3m 8 месяцев назад
Yes 20 Hz 😊😊😊😊
@manishkartikcubersking9794
@manishkartikcubersking9794 2 года назад
This like a teacher 💯 💯 sir ka sab lecture hame aur sabhi dost ko bhi samajh aa raha hai
@user-zk6kw5md2m
@user-zk6kw5md2m 8 месяцев назад
nice explanation sir, but i have a doubt that we have voice box/larynx so the sound is produced that's why we are able to speak but what for the people who are not able to speak?
@kemparajucm808
@kemparajucm808 8 месяцев назад
They also have larynx but due to minar damage in their vocal box they can't produce sound
@GurukulkaGyan
@GurukulkaGyan 9 месяцев назад
Class 9th legends are watching this class8th lacture before starting sound chapter 😎😄👍👍
@anu...5253
@anu...5253 Год назад
1 oscillation =1hz = 20 /1 hz = 20hz
@hustlewala
@hustlewala Год назад
48:36 the dialog is paisa hi paisa hoga.... And sir the answer is One oscillation = 1 Hz or frequency Then 20 oscillation = 20 Hz .... Thanks sir..... Love from bihar to whole ❤ PW tutors and facilities.....,
@anupakedia5084
@anupakedia5084 8 месяцев назад
Your explanation is really really good..your way of teaching and the way you explain the concepts is also really good sir..thank you so much for such a great explanation.💗
@asgarsabri709
@asgarsabri709 Год назад
Bestest teacher of physics ❤
@Firewheel-zb2ct
@Firewheel-zb2ct 11 месяцев назад
1 oscillation -1hz Frequency - total oscillation/total time taken =20/1 =20hz😊
@sanyambadola5168
@sanyambadola5168 2 года назад
Alok Sir 🔥🔥🔥🔥🔥🔥
@alokpratapchoubey6329
@alokpratapchoubey6329 2 года назад
Thank you sir 🥳🥳
@raj_yadav92
@raj_yadav92 6 месяцев назад
Sir your explanation level is smart 😎😎 😊who watch in 2024😮😂
@funwallah205
@funwallah205 2 года назад
48:30 hum ye samjh rahe ki ye lecture bahut achha tha or maja aa gaya kuch naya jaan ke
@Rohit.107
@Rohit.107 Год назад
42:22 frequency=Total oscillation/time taken 20/1=20(HERTZ)
@manv123ChauhanRajput
@manv123ChauhanRajput 2 года назад
48:36 Paisa hi paisa !!!😅 Hera pheri movie
@killerop5193
@killerop5193 6 месяцев назад
Exam se ek din pehle syllabus khatam 😅 PW IS BETTER THAN SCHOOL
@AyushKumar-mx9kf_mediumign0red
@AyushKumar-mx9kf_mediumign0red 5 месяцев назад
Exam result 60% only
@rajshree_1112
@rajshree_1112 2 года назад
At 48:40 I can hear-:“Paisa hi paisa hoga babu bhaiya...Paisa hi paisa”
@itsmehree6984
@itsmehree6984 2 года назад
😂😂
@umapsumaps3100
@umapsumaps3100 2 года назад
Sir nice explanation smaz aa gya 🤩🤩🤩
@never999999999
@never999999999 Год назад
Sir you are the best teacher of India jitne tarif utni km hai ♥️♥️
@karthikgames3867
@karthikgames3867 5 месяцев назад
thank you physicswallah for sound topic phisicswallah=Sucess thank you somuch
@KyurunVulpix
@KyurunVulpix 2 года назад
48:44 Paisa he Paisa
@ahmarnisar8761
@ahmarnisar8761 Год назад
Excellent teaching sir.
@umapsumaps3100
@umapsumaps3100 2 года назад
Sir 9 ka bhi koi chapter kro do plz 🙏🙏🙏
@VikashKumar-u7o8e
@VikashKumar-u7o8e Год назад
sound is a form of energy which produces sensation of hearing to ear
@kritisingh-tl3yt
@kritisingh-tl3yt Год назад
20 hertz by multiply 1 per sec x 20 oscillations is 20 times
@princetamboliya4599
@princetamboliya4599 Год назад
I think the answer is right but the explanation is wrong
@Farhan_H
@Farhan_H Год назад
@@princetamboliya4599 hmm🤔🙄
@miranz7903
@miranz7903 Год назад
@@Farhan_H cfghy
@kiranshivhare4449
@kiranshivhare4449 Год назад
No. of oscillation = 20per sec We know that no. of frequency is 20/1hz=20hz Thank u sir for teaching I have an exam tomorrow and u teach us very very nice
@epic_cars514
@epic_cars514 7 месяцев назад
Maja hi maja hai last me akashay kumar apna sir guma guma kar bol raha haii 48:44
@epic_cars514
@epic_cars514 7 месяцев назад
Akashay kumar be like mja hi mja haii legends ko ishra hi kafi hota hai😅
@imperialx8787
@imperialx8787 11 месяцев назад
Q) If a object oscillates 20 times in one second , what would be it's frequency Answer. Frequency = No. Of oscillations or revolution/ Total time taken Total oscillations =20 Total time taken = 1 second Frequency =20/1 Frequency =20hz (As unit of frequency is1hz for one oscillations per second)
@90skalaunda
@90skalaunda 10 месяцев назад
shabaash shabaash.. HEHEHAHAHAHA..(Ravan Style)
@jamesmiller9764
@jamesmiller9764 9 месяцев назад
huh@@90skalaunda
@afrozchaudhary9108
@afrozchaudhary9108 3 месяца назад
Ans 20 Hz
@shruty181
@shruty181 Год назад
42:34 As we know frequency= Number of oscillations/ Time taken Therefore, frequency= 20/1 That is = 20 hz Thankyou
@arcneedz
@arcneedz 8 месяцев назад
0:39 People who were wearing earphones at this time😂🥲
@tasneemkausarkausar7683
@tasneemkausarkausar7683 Год назад
The entry was marvellous along with that hat's of you because of your teaching efforts of your's 😇😇😇😇😇
@ABDUL_HANNAN2
@ABDUL_HANNAN2 Год назад
Very helpful i appreciate it iam studying one day brfore exam because i was absent in many lecture but this video cleared all my doubts...
@RinkiTiwari-bi9dr
@RinkiTiwari-bi9dr Год назад
Bhai pta chal rha hai before bhi galat likha hai yaar tumne
@nitumishra2859
@nitumishra2859 Год назад
​@@RinkiTiwari-bi9dr thousands of languages but to choose to speak the truth😅
@ShashankSingh-z4y
@ShashankSingh-z4y 2 месяца назад
Kaun kaun manata hai ki pw is best
@bhaveshsjain4038
@bhaveshsjain4038 Год назад
Such a Great Teacher Ever Ever 😍😍😍🤩🤩🤩
@Chhl_13
@Chhl_13 Год назад
Yess All teachers of pw are .....just like....god👑✨
@gmadhavg
@gmadhavg 9 месяцев назад
Sound is a form of energy that travels in the form of vibrations through air or any another medium 🔉
@Simp..f11
@Simp..f11 2 месяца назад
👏👏👏👏👏👏👏👏👌👌👌👌👌👌♥️♥️❤️❤️❤️💐
@lite_grayman6261
@lite_grayman6261 Год назад
i literally thought that my pc has broken for sound
@misty9415
@misty9415 Год назад
Me either
@ingmr7359
@ingmr7359 Год назад
Same
@Bhaktibhajan270
@Bhaktibhajan270 Год назад
@@misty9415 😎
@rakshagahoi6276
@rakshagahoi6276 Год назад
Same🤣
@misty9415
@misty9415 Год назад
@@amboygamer8505 hello
@sujaltayade3875
@sujaltayade3875 8 месяцев назад
Bhai Jo bhi exam ke ek din pehle padh ne Wale legend hai 😂😂 all the best to all of them people
@stickmineplay3802
@stickmineplay3802 8 месяцев назад
Maira 7ghantw me exam hai thanks for the legendary comment for the legendary
@GamerlSamar_official
@GamerlSamar_official 6 месяцев назад
Which school
@trendyindia8495
@trendyindia8495 Год назад
Respected sir ,, Excellent 👌
@akshatsingh.___
@akshatsingh.___ Год назад
Sir your explanation is out standing 💯💯💯 It helps me to understand this chapter very easily
@jitinswami7014
@jitinswami7014 Год назад
You are right
@Roshnipandey6221
@Roshnipandey6221 2 года назад
If an object oscillates 20 times in one second its frequence would be 20Hz
@Virenthakare5164
@Virenthakare5164 8 месяцев назад
Thank you so much sir you are no 1 Teacher for our physics Subject
@arpitnayak8298
@arpitnayak8298 Год назад
Some examples of unpleasant sounds are:- Songs of Dhinchak Pooja, Tony Kakkar and Thara bhai Joginder😂😂
@rashidakhatoon9823
@rashidakhatoon9823 Год назад
Right ✅ 🚷📳⭕🔱🔓🔓📡 inke bakwas songs ko ban kar dena chahiye 🗣🗣🗣💃🕺🧟🧟‍♀️👯‍♂️👯‍♀️👯
@parth6013
@parth6013 9 месяцев назад
Neha kakkar also
@smeep1658
@smeep1658 Год назад
Tomorrow is my paper and i am coming now. How many of you are hera like me 👇
@PLAY_TIME666
@PLAY_TIME666 Год назад
Me
@sudeshkumari2291
@sudeshkumari2291 10 месяцев назад
Me
@siddhantispiro
@siddhantispiro 10 месяцев назад
Your mom
@jigyasa_raghuvnshi__smratini27
Sir fen nahi Chal raha hai dhandhi hy 😂😂 Thankx sir bhut Mst pdhaya 😇🙃🤗🤗🤗😳
@AdarshKumar-kj6wz
@AdarshKumar-kj6wz 7 месяцев назад
48:33 Paisa Hi Paisa Hoga 😂
@rockstaraa9068
@rockstaraa9068 Год назад
i thank for phisics wallah foundation . your teaching scill is so good i understand everything in one shot😀😃😁🤩
@uniquegamer1415
@uniquegamer1415 Год назад
bhai skill ki splling scill nhi hoti hai
@empireatif7017
@empireatif7017 7 месяцев назад
​@@uniquegamer1415 spelling ki bhi galat h bhai teri 😂
@parasharam.
@parasharam. Год назад
Thankyou sir for teaching us🥰🤝
@niharikajha2081
@niharikajha2081 2 года назад
Frequency:-No.of oscillation/time taken =20/1 =20Hz
@Brijesh-nh8kb
@Brijesh-nh8kb Год назад
Where are you niharika in this time ? I think that I know you ?🤔🤔🤔🤔
@Brijesh-nh8kb
@Brijesh-nh8kb Год назад
Please tell me about you
@Aminamin-l2c
@Aminamin-l2c 4 месяца назад
Pw ka kis kis ko samaj aata ha
@mpandey-oq1pr
@mpandey-oq1pr Месяц назад
Hamko
@Gauravmurya2013
@Gauravmurya2013 24 дня назад
Nahi
@manv123ChauhanRajput
@manv123ChauhanRajput 2 года назад
Amazing teaching!! Love u sir ❣️
@shubhsirmath2800
@shubhsirmath2800 Год назад
The last seen of video We understand the seen without sound because we hear this sound before video in a film And our mind cached this as memory And we understand the sound without sound . Thank you sir Easy question
@shubhsirmath2800
@shubhsirmath2800 Год назад
Thank you for 10 like But I want your percent of class 9 result and other classes
@shubhsirmath2800
@shubhsirmath2800 Год назад
Tell me a New questions of math My math's percentage of result was 84 %
@smackyyt6196
@smackyyt6196 Год назад
Sir because of you I will pass I Am studying at 1:13 before exam🥰🥰
@Destinations5034
@Destinations5034 8 месяцев назад
Thank you some much for expecting such nicely But I also wanted the numericals from this chapter because in my exam there are numericals also Like this is velocity and time now find the sound Btw thank u
@Biruprasad-y4t
@Biruprasad-y4t Месяц назад
👋 Hello 👋 hello 👋 hello 👋 hello 👋
@itsshi
@itsshi 10 месяцев назад
Yes sir we can hear in the last 😂😂😂very nice teaching sir thank you very much❤❤❤
@ajdrawingandcraft3822
@ajdrawingandcraft3822 2 года назад
Q1=Frequency :Number of oscillators/time :20/1 =20per sec or 20Hz Thank you sir
@ayushroy.540
@ayushroy.540 2 года назад
42:14 Frequency = 20
@paristudio3968
@paristudio3968 Год назад
20Hz
@Moonxeditzz
@Moonxeditzz 8 месяцев назад
Thank you so much sir 😊
@sachin408
@sachin408 2 года назад
If an object oscillates 20 times in one second what would be it's frequency ? = 20 Hz
@sanketh9635
@sanketh9635 Год назад
Sir Last clip is "PAISA HE PAISA HOGA" Thanks for good teaching 🙏🙏🙏
@alladdinsheikh8576
@alladdinsheikh8576 Год назад
42:14 frequency= total oscillation/ time taken = 20/1 = 20hz
@ToxicPlayz126
@ToxicPlayz126 6 месяцев назад
Frequency=(total oscillation) / (time taken) = 20/1 Hz Ans=20 HZ
@smithnayak9533
@smithnayak9533 2 года назад
Ohh my god 🙏🙏 amazing teaching sir.. I really loved your teaching. Your are teaching so wonderfully 💗💗💗💗💗..love from Smith nayak from Odisha 💗💗💗💗💗💗💗💗💗
@the_end_gamer687
@the_end_gamer687 Год назад
Hii
@KartikRangra
@KartikRangra Год назад
Yyghyy
@snehamishra2068
@snehamishra2068 2 года назад
Awesome teaching
@timetostudybyyas8150
@timetostudybyyas8150 2 года назад
Question answer is 20 And pictures answer we observe by the emotions 🙂
@samarmuradia9101
@samarmuradia9101 6 месяцев назад
IDC what others will think but i am watching it in my holidays of promoting to 8th class and i have begun early. Science and Maths are my love
@samarmuradia9101
@samarmuradia9101 6 месяцев назад
Thanks for reading my comment and wasting your time!!
@samarmuradia9101
@samarmuradia9101 6 месяцев назад
OOOOO yOU have still not understood?? It is useless go away you are wasting your time
@samarmuradia9101
@samarmuradia9101 6 месяцев назад
Bruh idc what you want to do Read More
@samarmuradia9101
@samarmuradia9101 6 месяцев назад
SEE how i tricked you
@YASHSINGH_0005
@YASHSINGH_0005 Год назад
1 (Hz)= 1 oscillation per second
@pratibhasingh6175
@pratibhasingh6175 Год назад
yes
@bibekanandaghosh3426
@bibekanandaghosh3426 2 года назад
Hello Sir. The answer would be:- }Freq.=no. of vibrations completed Time Taken =20/1 Therefore, 20 hertz Or 20 per second My name is Prasenjit Ghosh.
@prnv_here
@prnv_here Год назад
Now I understood whu PW is an unicorn company and called emotion❤️
@Tweetayush
@Tweetayush 8 месяцев назад
Sir wave length or wave speed pls
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