Sound - Amplitude,Frequency & Time Period | Sound Class 8 - L3 | NCERT Solutions for Class 8 | CBSE

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  • Опубликовано: 2 янв 2025

Комментарии • 915

  • @VedantuJunior
    @VedantuJunior  5 лет назад +90

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  • @somurajesh5419
    @somurajesh5419 3 года назад +35

    frequency is the number of vibrations completed in unit time

  • @zohaibvlog9358
    @zohaibvlog9358 4 года назад +36

    Wow ma'am ur teaching style is so good

  • @akshatadevasur
    @akshatadevasur 3 года назад +7

    video starts at 5:35

  • @SulathaShetty-i9y
    @SulathaShetty-i9y Месяц назад +1

    The dog in audible and inaudible is so cute 🥰

  • @rushamarora3901
    @rushamarora3901 3 года назад +23

    15:00 the audible range for human beings is 20hz to 20000hz

    • @Icycloud07
      @Icycloud07 2 года назад

      She said kilohertz 1 kilohertz=1000 heartz understand kid

    • @slman9724
      @slman9724 2 года назад +1

      Ash gaming bot she said kilohertz not kiloheartzzz...... 😏😏😏😏😏😏☹️☹️☹️☹️☹️😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏😏

    • @shisui7780
      @shisui7780 2 года назад

      That's what she said

  • @88Gamer880
    @88Gamer880 3 года назад +4

    1:00 ch is start

  • @avdheshnayak811
    @avdheshnayak811 3 года назад +10

    Your expertise in teaching has put our minds at ease. Thanku ma'am for your great effort and brilliant explanation

  • @saudsstuff7488
    @saudsstuff7488 3 года назад +11

    So many people are confused and hope to get there doubts cleared by you in this comment section.

  • @somurajesh5419
    @somurajesh5419 3 года назад +35

    frequency is the measurement of the number of times that a repeated event occurs per unit of time.

    • @hmrdarkhawk8543
      @hmrdarkhawk8543 2 года назад

      in simple words, it is how many waves pass a point every second

  • @sanskrutipisal8811
    @sanskrutipisal8811 4 года назад +11

    she is so sweet......everything she explains very properly.....I am preparing for my exams by watching her videos....I dont even read my textbooks then also I score highest in my revision tests
    THANK YOU SO MUCH NABAMITA MA'AM

  • @agamer94
    @agamer94 4 года назад +6

    Video starts at 1:47
    Ends at 16:53

  • @Craftycanvascreations9
    @Craftycanvascreations9 4 года назад +14

    12:23 absolutely mam u explain very beautifully..

  • @iamamoneymagnet5519
    @iamamoneymagnet5519 4 года назад +4

    Video start at 1:25 thank me later

  • @triplesgamerz12
    @triplesgamerz12 4 года назад +3

    Thanks for your help...

  • @kavitadharra9018
    @kavitadharra9018 3 года назад +9

    Frequency = how many times did oscillation takes place

  • @ardhnadevi7924
    @ardhnadevi7924 4 года назад +4

    Mam urr explanation is very best.. Now,,, I'm understand all topics..
    ,,,thnx a lot,,,😊

  • @vikashnirmal1718
    @vikashnirmal1718 4 года назад +2

    Thankuuuu so mach maam 🤗😍😍

  • @kdrama_edits3221
    @kdrama_edits3221 3 года назад +7

    Thanks ma'am all doubts got cleared. I wish u could join vedantu again

  • @anshukumari8a088
    @anshukumari8a088 3 года назад +2

    Thanku mam.Your teaching style is too good mam.

  • @mayurinakerekanti
    @mayurinakerekanti 2 года назад +7

    Hello..
    i dont know why i am confusing.., my question is 1.what is the relation between the amplitude and peak to peak in a waveform?
    2.what is the relation between frequency and time?
    Please answer these.. I am still confusing after watched your videos also..

    • @gudi204
      @gudi204 2 года назад +1

      I too , have the same doubt

    • @subhashreemamali1118
      @subhashreemamali1118 2 года назад

      The more the frequency the less is the time period

  • @Rockonmanish
    @Rockonmanish 4 года назад +13

    Thank you for teaching well in this lockdown

    • @scgalld1
      @scgalld1 4 года назад +3

      Carry ke fan ho toh like thoko

    • @ysgaming465
      @ysgaming465 4 года назад

      Bahot tej ho raha ho

  • @haniyafathima5338
    @haniyafathima5338 3 года назад +5

    tq u master tr nabamitha mam it was really helpful for my exam as i didnot listen to my class properly and didnt understand de consept properly and after watching the video i understood it very well...

  • @gauravtiwari2003
    @gauravtiwari2003 2 года назад +1

    15:12...Frequency is measured in Hertz(Hz)....😎

  • @sangitagaur7552
    @sangitagaur7552 4 года назад +8

    Thank you mam😊
    Your explanation is wow.. ❤️

  • @sakshikalhe5129
    @sakshikalhe5129 4 года назад +2

    Mam you r awesome 😊😊😊😊

  • @syashasvi7966
    @syashasvi7966 3 года назад +4

    thank you ma'am for clearing my doubts

  • @snehabaghele8283
    @snehabaghele8283 4 года назад +1

    Very easily understand mam you are the best

  • @Tangent192
    @Tangent192 3 года назад +5

    Mam you had explained so easily and your teaching way is also so good,but a doubt is raising that what is amplitude, mam can you plz tell it in another way plz,plz.

  • @srushtimullur9786
    @srushtimullur9786 4 года назад +1

    Urs explination is superbb tq so much mam

  • @renushrivastav8604
    @renushrivastav8604 4 года назад +14

    Audible range of sound that human beings can hear is 20hertz -20,000 hertz

  • @rex_08
    @rex_08 4 года назад +10

    Nabamita Ma'am teaches wow! But Still i have a doubt😅
    What is And where is Equilibrium in sound or Amplitude

    • @agmaioshorts.4257
      @agmaioshorts.4257 4 года назад +4

      equilibrium is the position of air molecules when it is not disturbed by vibrations or other things so it is the undisturbed position of air molecules.

    • @theadam5341
      @theadam5341 4 года назад +2

      @@agmaioshorts.4257 Ok thanks

  • @samruddhideshpande1783
    @samruddhideshpande1783 4 года назад +1

    Mam ur teaching is very very amazing

  • @akhtarhasnain7957
    @akhtarhasnain7957 4 года назад +10

    Mam why are you not say the formulae of amplitude, time period and frequency

  • @breezedarjes1754
    @breezedarjes1754 4 года назад +1

    Thanks
    Mam....😄😄😄

  • @Maira-e6j
    @Maira-e6j 2 года назад +8

    18:09 Audible sound range - 20Hz to 20,000Hz
    Infrasonic wave(inaudible sound) -less than 20 Hz
    Ultrasonic wave (inaudible sound) -more than 20,000Hz

  • @surekhatolmare6781
    @surekhatolmare6781 3 года назад +2

    Awesome mam you're explanation is very nice it's should easy to understand.....

  • @shikhakhandelwal284
    @shikhakhandelwal284 3 года назад +3

    Awesome explanation....now frequency /amplitude are all clear to me

  • @anujagarwal1094
    @anujagarwal1094 4 года назад +1

    Mam y'r english is very good very amazing very good very nice

  • @prakritisingh7428
    @prakritisingh7428 4 года назад +15

    Mam : I will draw it because Picasso is my relative..
    Me : immediately likes the video..

  • @glitchgaming3840
    @glitchgaming3840 4 года назад +1

    Thank u mam You teach very nice.😍😍

  • @abhinavbenakanal1968
    @abhinavbenakanal1968 4 года назад +13

    20 to 20,000 Hertz of every human being

    • @savitadamor789
      @savitadamor789 4 года назад +3

      🍌🍌🍌🍌🍌🍌🍌🍌🍌

    • @mridulabhuyan3635
      @mridulabhuyan3635 4 года назад

      🍂🍂🍂

    • @ramashankaryadav4446
      @ramashankaryadav4446 4 года назад

      Yes

    • @dnlxcenzo
      @dnlxcenzo 4 года назад +2

      dj alok op.....
      chrono be like: tera baap aaya
      i have chrono

    • @mridulabhuyan3635
      @mridulabhuyan3635 4 года назад +1

      @@dnlxcenzo chrono is tatti it only saves shots but his disadvantage is car ...every character has disadvantage.

  • @ishamalik6928
    @ishamalik6928 3 года назад +1

    Thank you mam for this explanation, you are great 🥇🥇🥇😉😉😉

  • @PankajKumar-zx4ci
    @PankajKumar-zx4ci 4 года назад +10

    Audible range of sound that human beings can hear is 20Hz to 20000Hz.
    And the inaudible range of sound is below 20Hz and above 20000Hz.
    AM I CORRECT????🤔🤔🤔

  • @surekhapawar6026
    @surekhapawar6026 4 года назад +1

    Good explain

  • @MADMAX_2.0.
    @MADMAX_2.0. 4 года назад +9

    Ma'am I cannot understand the wavelength

    • @VedantuJunior
      @VedantuJunior  4 года назад +6

      Will make another video or please join vedantu app.

    • @MADMAX_2.0.
      @MADMAX_2.0. 4 года назад +4

      @@VedantuJunior thanks a lot ma'am

    • @MukeshKumar-nc9zx
      @MukeshKumar-nc9zx 4 года назад

      @@VedantuJunior thank you

    • @funvines7314
      @funvines7314 3 года назад

      @@VedantuJunior very good nice promotion of your app

  • @krishnaranjan8933
    @krishnaranjan8933 4 года назад +2

    Thank you mam

  • @angelkhugsal6203
    @angelkhugsal6203 3 года назад +12

    Mam you teach so good...I have got 96% in my exam....before it was 79%...

    • @nature_loves_
      @nature_loves_ 2 года назад +2

      Kyu jhoot bol rhe ho

    • @gwadarsh6919
      @gwadarsh6919 2 года назад

      Kyu bhi !!!!!!🤨🤨🤨😶😶😶😮😯

  • @padmajam2622
    @padmajam2622 2 года назад +1

    Mam you are the best teacher...

  • @dipaknag3402
    @dipaknag3402 4 года назад +7

    Thanks for this mam

  • @shishpalyadav2309
    @shishpalyadav2309 3 года назад +1

    You are fantastic
    Such a nice explanation

  • @bluevoidgamer8901
    @bluevoidgamer8901 4 года назад +3

    Thank you very much mam and to all vedantu master teachers

  • @srinivasgoudkoyyada3162
    @srinivasgoudkoyyada3162 3 года назад +1

    Hi mam I can understand Ur explanation please give me heart

  • @haiderzaman4474
    @haiderzaman4474 2 года назад +1

    v v v tnxxxxxxxxxxxxxxxxxxx.
    you cleared my confusion of 10 years.
    amplitude

  • @poonamprasad3478
    @poonamprasad3478 4 года назад +7

    Ma'am thank you very much. U always help💝

  • @CreativNavigation
    @CreativNavigation Год назад +2

    (summary of lesson 1 and 2 of nabita ma'ams videos)
    -Vibration is the faster movement of a body which could or could not produce sound, pretty close to oscilation.
    -In a flute we do not a have a sensation of a vibration, we have a air column, when air is passed through the air column, it collides the column boundaries, and if noticed the musician playing the flute places his/her hand on to the holes. Therefore creating sound!
    -Another example of this is and old ancient form of producing sound, filling few bowls of water and while using some sticks you can create ripples in the water (the water in each bowl should be different for the difference in the sounds produced) These ripples are the result of vibration or the impact of the stick hitting the bowls.
    -By this we also conclude that souns create vibration, and vibrations creates sound!
    -In humans we can take an anology of a flute as well, the wind pipe acts as the air column and the sound is produced through vocal chors which also produce vibrations. the vibration here is produced when we exhale while talking, the air molecules hit eachother creating vibrations and therefore sound! (Fun fact of my own: You can't talk while inhaling!)
    - Sound is energy, let's take an instance, i am talking about something and you are able to hear it. This is because, while talking i transfer the energy produced from my vocal chords to the air molecules present in air.
    - These molecules then start moving passing the energy (sound) from one molecule to another and therefore letting the sound travel.
    - The origination of the sound is the place where the molecules which have the energy colide with eachother, this colision pushes the molicules further away, and therefore coliding with the molecules present in front.
    - This is how contraction and relaxation takes place.
    - The sound is also enabled too travel in solids and liquids.

  • @harikrishnan2713
    @harikrishnan2713 3 года назад +4

    Man, I have a doubt. Why amplitude does not affect the time period of the longitudinal wave? If I take the example of a sound wave, then amplitude means the maximum distance covered by the air particle to either left or right side to it from the equilibrium, right mam? So, If amplitude is higher, the particle has to cover that much distance to its right, then to the mean position, then to the left, and then back to the mean position to complete one oscillation, if my understanding is right. Then won't the particle take more time to complete one oscillation? I am really confused 🙁

    • @safiarais
      @safiarais 3 года назад +2

      you should ask this question in her telegram, she'll reply you, I hope so.

    • @sanvisharma2946
      @sanvisharma2946 3 года назад

      actually low frequency mai particles bohot slow move kar rahe hai ....that's why they are taking more time and in high frequency particles are moving fast ....that's why they are taking less time...
      I HOPE YOU UNDERSTAND ..🤗

    • @hmrdarkhawk8543
      @hmrdarkhawk8543 2 года назад

      because the amplitude is the movement perpendicular to the wave motion
      it does not affect the limit of frequency because it is the vertical axis

    • @harikrishnan2713
      @harikrishnan2713 2 года назад

      @@hmrdarkhawk8543 But as far as a longitudinal wave is concerned, the direction of wave is same as the direction of amplitude.

  • @krypt3xfps
    @krypt3xfps 4 года назад +2

    Mam it's not contraction and rarefaction it's compression and rarefaction

  • @amarsingh-wf6jl
    @amarsingh-wf6jl 4 года назад +14

    The maximum displacement of an oscillating body from its central position is called amplitude (ob or oa)

  • @asharma8856
    @asharma8856 3 года назад +1

    Best teacher ever ☺️☺️☺️

  • @Mad--education
    @Mad--education 5 лет назад +31

    Mam how the sound travels in Bluetooth speakers or headphones

    • @SangitaDevi-gb8zc
      @SangitaDevi-gb8zc 4 года назад +2

      ooooo yes mam

    • @idrishkhan2421
      @idrishkhan2421 4 года назад +5

      Through a medium

    • @InsaneCOD
      @InsaneCOD 4 года назад +23

      for example . if i am playing a music on the speaker through Bluetooth through my phone the phone will convert the sound frequency into electrical signals or radio signals and the speaker will receive it and decode the signal again into sound frequency

    • @sciencetheknowledge7852
      @sciencetheknowledge7852 4 года назад

      @@InsaneCOD I agree

    • @sadaanant450
      @sadaanant450 4 года назад

      @@sciencetheknowledge7852 through air cause it is a mechanical wave

  • @abdulmotleb5036
    @abdulmotleb5036 4 года назад +2

    Nice mam I understand

  • @AnilKumar-xv9os
    @AnilKumar-xv9os 3 года назад +4

    what is the difference between high, low sound and loudness of sound

  • @apurv7707
    @apurv7707 3 года назад +2

    Tnx nobita mam

  • @ganeshchoudhury5308
    @ganeshchoudhury5308 4 года назад +8

    I loved the session mam!!
    It was cristal clearly understood
    Thank u for clearing out doubts

  • @rinkudevi7825
    @rinkudevi7825 4 года назад +2

    🙏Good morning 🙏

  • @somurajesh5419
    @somurajesh5419 3 года назад +5

    mean position is the rest position of a vibrating body

  • @anupallavi.m9724
    @anupallavi.m9724 4 года назад +2

    Thanks mam I loved u r class

  • @Bhavyabhartii
    @Bhavyabhartii 4 года назад +6

    Mam you are sooooooooooo cuteeeeeeeeee 😍😍😍😍😍

  • @FaisalKhan-dy5us
    @FaisalKhan-dy5us 4 года назад +1

    mam you are the best teacher in vedantu app

  • @Anuj_sehgal
    @Anuj_sehgal 4 года назад +5

    i was just having doughts in this but the way u taught has cleared all my doughts

  • @skylords2487
    @skylords2487 3 года назад +2

    Perfect teaching

  • @amandeepsharma6188
    @amandeepsharma6188 4 года назад +10

    those animals who can hear infrasounds can they hear the ultra sound also?

  • @hareramrai7303
    @hareramrai7303 3 года назад +1

    You are the too good teacher thanku❤️❤️

  • @erosentertainment5399
    @erosentertainment5399 4 года назад +4

    Does sound travel in space?

    • @glitchgaming3840
      @glitchgaming3840 4 года назад +4

      No sound cannot travel in space because sound needs a medium like solid, liquid and gas but in space there is no medium. So sound cannot be heard in space

    • @amaanfreefire1043
      @amaanfreefire1043 4 года назад +1

      @@glitchgaming3840 op bolte

  • @ankitanand564
    @ankitanand564 4 года назад +1

    Thank u so much Ma'am

  • @AR1DH18A
    @AR1DH18A 4 года назад +10

    Mam how the sound travels in bell and in pen when we blow inside it .it produces sound like Whistler

    • @AR1DH18A
      @AR1DH18A 4 года назад +1

      Instead of no holes in it

    • @AR1DH18A
      @AR1DH18A 4 года назад

      Mam please answer 😊🙂🙏

    • @MrUpen2008
      @MrUpen2008 4 года назад +2

      @@AR1DH18A beta in bell electric energy is used to hit bell and vibration is produced... In case of pen sound is produced due to change in pressure of air by air blown by your mouth.

    • @Fine.Dine999
      @Fine.Dine999 4 года назад +1

      @@MrUpen2008 of

  • @TheraliMurry-yc5yg
    @TheraliMurry-yc5yg 6 месяцев назад

    Mam ur explanation was mind blowing😮🎉 i love it😊

  • @poonamsharma-yc6yk
    @poonamsharma-yc6yk 4 года назад +22

    Mam why are you looking at your right ? That creates distraction.

  • @OFFICIAL_GAMER_0
    @OFFICIAL_GAMER_0 4 года назад +2

    excellent teaching, mam

  • @maheshtyagi6561
    @maheshtyagi6561 5 лет назад +5

    Thank you mam. Your teaching methods is very good

  • @badrishorts6179
    @badrishorts6179 4 года назад +1

    It is very good to understand for me mam

  • @MushtaqAhmad-xs8vf
    @MushtaqAhmad-xs8vf 4 года назад +8

    Thank you so much ma'am i understood it very well my all doubts are cleared 😊😊

  • @anime_sync7
    @anime_sync7 4 года назад +3

    Mam explain how loudness depends on amplitude

    • @rpdp7022
      @rpdp7022 4 года назад +2

      when the amplitude is high sound is high when amplitude is low sound is low . i think it is correct bro........................

    • @sruthishaji7790
      @sruthishaji7790 4 года назад +1

      The loudness of sound depends upon ampitude.When the amplitude is very large, the sound produced is loud.When the amplitude is small,the sound produced is feeble..

  • @kokiluzir7959
    @kokiluzir7959 4 года назад +3

    22:36

  • @valourshourya
    @valourshourya 3 года назад +2

    2:18
    just imagine that the particles are been hitten from the left side and they are going far away

  • @punamsingh6146
    @punamsingh6146 4 года назад +8

    Ma'am my name is harsh raj . Very very good morning to you ma'am .Ma'am, please put a chapter on "Friction" . Ma'am I need the knowledge of this chapter.

  • @ParasSharma_moonlight_
    @ParasSharma_moonlight_ 3 года назад +1

    You clears my all the daouts

  • @shivanigupta5134
    @shivanigupta5134 4 года назад +3

    Mam that question you asked in 14:55 that what range of sound can we hear is 20-20,000 hertz

  • @avinashkumar3160
    @avinashkumar3160 4 года назад +1

    nice teaching maam like this

  • @Bhavyabhartii
    @Bhavyabhartii 4 года назад +5

    I didn't understood the meaning of the AMPLITUDE

  • @mallikasharma8245
    @mallikasharma8245 4 года назад +1

    Mam. Good morning You learned very good

  • @simrangirdhar622
    @simrangirdhar622 4 года назад +4

    What is the speed of sound in solid and liquid??

  • @asthashan6448
    @asthashan6448 3 года назад +1

    Thank you so much mam!!!!

  • @vamshikrishna9797
    @vamshikrishna9797 4 года назад +6

    ma'am what do u mean by meen(mean) position ?? and how could u place it on that graf??

    • @MrUpen2008
      @MrUpen2008 4 года назад +1

      Please understand this concept by pendulum example and mean position is the place when Bob is at rest. In graph it indicate 0 position

  • @shalu191310
    @shalu191310 3 года назад +2

    mam please again tell that what is amplitude and frequency i really didnt understand that and i m having my h.f. tomorow for science and i m here cause u r my favourite teacher

  • @Nisha-pp4lb
    @Nisha-pp4lb 4 года назад +3

    11:13 likhte sab h lekin dekhta koi ni 🤕

  • @kulwindersingh6484
    @kulwindersingh6484 4 года назад

    Thank u mam 🙏🙏🙏🙏🙏☺☺☺

  • @aaravjadon6008
    @aaravjadon6008 4 года назад +3

    What's the meaning of amplitude

  • @purvisinghicute2392
    @purvisinghicute2392 3 года назад +3

    What is the speed of the sound in solids and liquids