A sound ray is incident on a flat surface at to the surface

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

Problem

A sound ray is incident on a flat surface at

40^{\circ}

to the surface. What is the angle of reflection measured from the normal? (a)

40^{\circ}

(b)

80^{\circ}

(c)

50^{\circ}

(d)

90^{\circ}