A sound ray strikes a smooth flat wall making an angle of with the normal to the wall

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

Problem

A sound ray strikes a smooth flat wall making an angle of

30^{\circ}

with the normal to the wall. What is the angle between the incident and the reflected rays? (a)

90^{\circ}

(b)

60^{\circ}

(c)

30^{\circ}

(d)

120^{\circ}