Question

A particle on the trough of a wave at any instant will come to the mean position after a time (T=time period).

(a) T/2

(b) T/4

(c) T

(d) 2T

This question was addressed to me in an online interview.

This interesting question is from Progressive Waves in chapter Waves of Engineering Physics I

Answer 1

Correct option is (b) T/4

Best explanation: Time taken by a particle to move from trough to the mean position=T/4.