COMEDK Exam 2019 Solved Paper

Given, time interval between echoes =1 s
Speed of sound in air, v=340ms−1
Let the distance between man and cliff be x.
Time taken by sound to hit cliff and return =‌

2x

v

1‌=‌

2x

v

⇒‌‌x‌=‌

340

2

m=170m
Thus, distance between cliffs
=170×2=340m