Question

A sound wave produce 50 compressions and 50 rarefactions in 0.5 sec then the frequency of sound wave is

Answer 1

Time period: The time interval between two successive compressions or rare fractions.

For 50 compressions it takes 0.5s
Then, for 2 compressions time taken is 1/50 = 0.02 seconds

Frequency = 1 / Time period
= 1 / 0.02
= 50 Hz

Frequency of sound wave is 50 Hz

Answer 2

Step by Step explanation:

Given: A sound wave produces $50$ compressions and

To find: Frequency of sound wave.

For calculation of sound waves,

We know that for $50$ compressions, it takes $0.5$ seconds.

Then for 2 compressions, the time taken is,

⇒ $\frac{1}{50}$

⇒ $0.02$ seconds.

We know that frequency $= \frac{1}{Time Taken}$

⇒ $\frac{1}{0.02}$

⇒ $50Hz$

The frequency of the sound wave is $50Hz.$