Question

A boy standing between two cliffs shouts “Hello” and hears two echoes after 1 sec and 2 sec. What is
the distance between the two cliffs. (Speed of sound = 340 m/s)
(a) 680 m (b) 1020 m (c) 510 m (d) 340 m

Answer 1

Answer:

680m

Explanation:

speed of sound=340m/s

Time =2 secs

Distance =speed*time

=340m/s*2 s

=680m