Question

In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacemnt is $0.17s$. The
frequency of the wave is

• A. $1.47Hz$
• B. $0.36Hz$
• C. $0.73Hz$
• D. $2.94Hz$

Answer 1

The correct option is A $1.47Hz$

Time to travel $\frac{\pi }{2}$ rad is $17sec$
$\therefore$ time to complete the cycle is $4\times 0.17=0.68$
$f=\frac{1}{T}$
$=\frac{1}{0.68}$
$=1.47sec$