Question

A sound wave produces 100 compressions and 100 rarefaction in 1 sec then the frequency of
sound wave is
(A) 50 Hz
(B) 100 Hz
(C) 200 Hz
(D) 250 Hz​

Answer 1

Answer:50HZ

Explanation:Because b/w every rarefaction and compression there is one cycle. No of cycle/1s = frequency

Answer 2

The frequency of sound wave is 100 Hz.

(B) is correct option.

Explanation:

Given that,

Compression = 100

Time = 1 sec

We need to calculate the frequency of sound wave

Using formula of frequency

$f=\dfrac{\text{number of compression or refraction}}{time\ period}$

Put the value into the formula

$f=\dfrac{100}{1}$

$f=100\ Hz$

Hence, The frequency of sound wave is 100 Hz.

Learn more :

Topic : frequency

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