For air at , what is the minimum distance between a listener and a large reflecting…

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

Problem

For air at

340\,\text{m s}^{-1}

, what is the minimum distance between a listener and a large reflecting wall for a distinct echo to be heard? (a)

34\,\text{m}

(b)

8.5\,\text{m}

(c)

17\,\text{m}

(d)

16.5\,\text{m}