In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.14s. The frequency of the wave is

Options

A. a)0.42Hz
B. b)2.75Hz
C. c)1.79Hz
D. d)0.56Hz

Answer

C

Explanation

Time taken by the wave to travel a distance `=0.14 times 4`
=0.56 s
Frequency `f_c=I/T`
`=1/0.56`
`f=100/56`
or `f=1.79Hz`