Question

A medium carrying a sound wave receives compression pulse at every 0.02sec. Its frequency is

(A) 2 Hz (B) 50 Hz (C) 20 Hz (D) 5 Hz

Answer 1

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WE ALL KNOW ,

$frequency = \frac{1}{time \: period}$
$so \: frequency \: = \frac{1}{0.02} \: hertz$
$frequency \: = 50 \: hertz$

⚡️ THEREFORE, OPTION "B'' IS YOUR CORRECT ANSWER...........!!!!!!




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Answer 2

Given :

Time period of wave , T = 0.02 sec .

To Find :

The frequency of wave .

Solution :

We know , frequency is 1 upon time period .

Therefore ,

$f=\dfrac{1}{T}\\\\f=\dfrac{1}{0.02}\ Hz\\\\f=50\ Hz$

Therefore , the frequency of wave is 50 Hz .

Learn More :

Waves and frequency

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