Question

what should be the minimum distance between the source of sound and the reflector for hearing a distinct echo if speed of sound is 350 m/s.

Answer 1

your answer is a 17 metre

Answer 2

Speed =350m/s

we know time to hear an echo =0.1second

so distance=Vt/2   (formula )

                  =350*0.1/2

                   =35/2

                   =17.5m

HOPE IT HELPS!!! PLZZZ MARK BRAINLIEST