A sound ray is incident on a vertical wall such that the angle between the incident…

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

Problem

A sound ray is incident on a vertical wall such that the angle between the incident and reflected rays is

70^{\circ}

. The reflected ray then strikes a second wall that is at right angles to the first. What is the angle of incidence on the second wall? (a)

45^{\circ}

(b)

55^{\circ}

(c)

35^{\circ}

(d)

70^{\circ}