A sound ray meets a flat wall at an angle of with the surface of the wall

PHYSICS · Subjective · A Level · Physics · Waves · Waves

Problem

A sound ray meets a flat wall at an angle of 30∘30^{\circ} with the surface of the wall. Will the reflected ray leave the wall at 30∘30^{\circ} or 60∘60^{\circ} to the wall surface? Explain your answer in one or two sentences.

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