A boy standing near a vertical cliff claps his hands and hears the echo after

PHYSICS · Single correct · CBSE · Physics · Sound · Sound

Problem

4.0\,\text{s}

. If the speed of sound in air is

340\,\text{m/s}

, how far is he from the cliff? (a)

1360\,\text{m}

(b)

680\,\text{m}

(c)

340\,\text{m}

(d)

660\,\text{m}