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How does the sound produced by a vibrati...

How does the sound produced by a vibrating object in a medium reach your ear ?

Text Solution

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When an object vibrates, it sets the particles of the medium around it vibrating. The particles in the medium in contact with the vibrating object displace from its equilibrium position. It then exerts force on the adjacent particles. After displacing the adjacent particle the first particle of medium comes back in its original position. This process continues in the medium till the sound reaches your ear.
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Knowledge Check

  • The velocity of sound produced by a vibrating body varies -

    A
    directly as the sq . Root of density of the medium
    B
    inversely as the density of the medium
    C
    directly as the sq. root of frequency of the medium
    D
    inversely as the frequency of the medium

  • Assertion (A): The loudness of sound produced by the vibrating body can be increased. Reason (R): The loudness of sound by the vibrating body depends on the amplitude of vibration and also the surface area.

    A
    A and R are true and R is the correct explanation of A.
    B
    A and R are true, but R is not the correct explanation of A.
    C
    A is true but R is false.
    D
    Both A and R are false.

  • Assertion (A) : The pitch of the sound produced by the vibrating string can be changed. Reason (R) : The pitch of the sound can be changed by changing the length, tension and thickness of the vibrating string.

    A
    Both A and R are correct and R is the correct explanation of A.
    B
    Both A and R are correct but R is not the correct explanation of A.
    C
    A is correct and R is incorrect.
    D
    Both A and R are incorrect.

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    Expain when does a body produce vibrations.

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    Which of the following statements are correct? (i) Sound is produced by vibrations. (ii) Sound requires a medium for propagation. (iii) Light and sound both require a medium for propagation. (iv) Sound travels slower than light.

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