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Introduction to Sound Waves

41.The amount...

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41.The amount of reflection a sound wave undergoes depends upon:- 1.)Speed of the wave 2.)Density of the medium 3.)both of above 4.)none of these

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Fill in the blanks.

(1) Sound waves need …………….. medium for propagation.

(2) Technique of echocardiography is based on reflecting property of …………….. waves.

(3) Sound produced by vibration of simple pendulum is …………….. sound.

(4) For determination of the depth of the sea …………….. technique is used.

(5) Pitch of a sound depends upon ………………. of wave.

Q. Speed of sound wave in medium on depends modulus of elasticity and density of medium, then find a relation for speed of sound wave(in terms of given parameters).

Q. The speed of an electromagnetic wave through a medium, depends upon

(i)

permittivity of the medium

(i i)

permeability of the medium

(i i i)

density of the medium

(i v)

physical state of the medium

Q. What does the speed of sound wave depend upon

Q. Read the following statements carefully.
(A) The SI unit of wave velocity is metre per second
(B) Frequency of a wave does not change with change in medium
(C) The speed of sound in a medium depends on temperature of the medium
(D) The speed of sound increases with increase in density of air
Choose the correct statements:

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