Which expression gives the distance from an observer to a reflecting cliff if an echo…

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

Problem

Which expression gives the distance

d

from an observer to a reflecting cliff if an echo is heard

t

seconds after a loud clap, where the speed of sound in air is

v

? (a)

d = v t

(b)

d = \dfrac{v t}{2}

(c)

d = 2 v t

(d)

d = \dfrac{v t}{4}