Question

After 6 seconds of hammering an aluminium sheet a boy
heard the sound. What is the distance of the boy from
the source of hammering?
(Speed of sound in air = 342 m/s)
​

Answer 1

ANSWER

Let distance of hill from the position of the body be d.

Echo is heard after 6s

Speed of sound, v=340m/s

So, d=v×2t

or, d=340×26=1020m

Answer 2

ANSWER

Let distance of hill from the position of the body be d.

Echo is heard after 6s

Speed of sound, v=340m/s

So, d=v×

2

t

or, d=340×

2

6

=1020m