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CBSE Class 9 Science Question 27 of 33

Sound — Question 4

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Question

Question 4

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?

Answer

Given,

Frequency (ν) = 500 Hz

The time interval between successive compressions from the source is equal to the time period.

We know,

time period (T) = 1ν\dfrac{1}{\text{ν}}

Substituting we get,

T = 1500\dfrac{1}{500} = 0.002 s

Hence, time interval between successive compressions from the source = 0.002 s.