Question

The equation of a transverse wave is given by $y=10sin\pi (0.01x-2t)$ where x and y are in cm and t is in second. Its frequency is

• A. 10 sec^-1
• B. 2 sec^-1
• C. 1 sec^-1
• D. 0.01 sec^-1

Answer 1

The correct option is C

1 sec^-1

Compare the given equation with $y=\alpha cos(\omega t+k\varphi )\Rightarrow \omega =2\pi n=2\pi \Rightarrow n=1s^{-1}$