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[20]
A person is listening to a tone of $500 Hz$ sitting at a distance of $450 m$ from the source of the sound. What is the time interval between successive compressions from the source? If the speed of sound in air is $330 m s^{- 1}$ .

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0.003 s

0.004 s

0.002 s

0.012 s

answer is C.

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Detailed Solution

Time interval between successive compression from the source is

0.002 seconds .

Given that,
Frequency of the tone,

f = 500 Hz

.
It is sitting at a distance of

450 m

from the source of the sound,

d = 450 m

.
Let

T

is the time interval between successive compression from the source.
We know that the relation between the frequency and the time period is,
⇒

T = \frac{1}{f}

⇒

T = \frac{1}{500}

⇒

T = 0.002 s

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