Question

aditi clapped her hands near a cliff and heard the echo after 4 seconds what is the distance of the cliff from her if the speed of sound is taken as 346 m/s

Answer 1

speed= distance by time
346= distance by 4
distance= 346×4
= 1384 m or 1.384 km.

Answer 2

Given, speed of sound, v = 346 m/s

Time taken for hearing the echo, t = 4 s

.’. Distance travelled by the sound = v x t

= 346 x 4= 1384m

In 4 s, sound has to travel twice the distance between the cliff and Aditi.

Therefore, the distance between the cliff and Aditi is 1384/2 = 692 m.