Question

The frequency of a wave traveling at a speed of $500m/s$ is $25Hz$. Its time period will be :

• A. $20s$
• B. $0.05s$
• C. $25s$
• D. $0.04s$

Answer 1

Answer: (D)

$0.04s$

Given,

Speed of wave $v=500m/s$

frequency of a wave $f=25Hz$

Time period is the reciprocal of the frequency, and is given by,

$T=\frac{1}{f}=\frac{1}{25}=0.04s$