Question

A person is listening to a tone of 500 Hz sitting at a distance of 450 m from the source of sound.What is the time interval between successive compressions from the source ?

class 9 - cbse

Answer 1

The time interval between successive compressions is equal to the time period of the wave. And this time period is the reciprocal of the frequency of the wave.

It is given by:

T = 1 / Frequency

   = 1 / 500

   = 0.002 s 

Answer 2

Time  interval between successive compression is, T = 0.002 seconds

Explanation:

Given that,

Frequency of the tone, f = 500 Hz

It is sitting at a distance of 450 m from the source of 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 :

$T=\dfrac{1}{f}$

$T=\dfrac{1}{500}$

T = 0.002 s

So, the time interval between successive compression from the source is 0.002 seconds.

Learn more :

Topic : Frequency and wavelength

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