A sound wave is incident on a smooth wall at to the wall surface

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

A sound wave is incident on a smooth wall at

40^{\circ}

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

45^{\circ}

(b)

70^{\circ}

(c)

50^{\circ}

(d)

40^{\circ}