Question

clapped her hands near a cliff and hear the echo after 4 second what is the distance of the cliff from her if the speed of sound is taken as 346ms

Answer 1

Given,
The speed of sound = 346m/s
Time after which the echo is heard=4 sec
Let the distance travelled be d
Total distance travelled= 2d

Distance covered= Speed × Time taken
=> 2d=346×4
=> d= 1384/2
=> d= 692

Answer 2

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

Time taken for hearing the echo, t = 4 s

Time taken for hearing the echo, t = 4 s.’. Distance travelled by the sound = v x t

Time taken for hearing the echo, t = 4 s.’. Distance travelled by the sound = v x t= 346 x 4= 1384m

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.

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.