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The frequency...

Question

The frequency of sound waves in water is

A

Same as that of frequency of source

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B

Less than frequency of source

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C

More than frequency of source

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D

Can't say

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Solution

The correct option is A Same as that of frequency of source
Frequency of a wave is characterised by the source of the wave, which produces disturbance, therefore it doesn't change when medium is changed. So frequency will not change in water and will be same as the frequency of source.

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Q. The frequency of a source is 15KHz. The frequencies of the sound wave produced by it in water and air will:
a) be same as that of the source
b) be different. Frequency in water will be more than that of air.
c) be different. Frequency in air will be more than that of water.
d) depend upon the velocities of sound in these media

Q. Assertion :Ultrasonic waves are longitudinal waves of frequency grater than

20, 000 H z

Reason: The maximum frequency of audible sound waves is

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Q. Assertion :Ultrasonic waves are longitudinal waves of frequency greater than 20,000 Hz. Reason: The maximum frequency of audible sound waves is 20,000 Hz.

Q. What are the sound waves of frequency more than 20 kHz called?

V_{s}

be the speed of the source emitting sound waves,

n

the actual frequency of the source of sound,

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the speed of the sound in the medium and

n_{1}

the frequency of sound waves as perceived by a stationary observer to whom the source of sound is approaching. The formula for calculating

n_{1}

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