Calculate the minimum distance from a reflecting surface in air (speed of sound )…

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

Problem

Calculate the minimum distance from a reflecting surface in air (speed of sound

343\,\text{m/s}

) required for a person to hear a clear echo. (a)

34.30\,\text{m}

(b)

68.60\,\text{m}

(c)

17.15\,\text{m}

(d)

16.50\,\text{m}