(a) What is meant by 'reflection of sound'? What type of surfaces are the best for reflecting sound?
(b) Name any two objects which are good reflectors of sound.
(c) State the laws of reflection sound.

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Solution

(a) The sound waves bounced back after striking a hard surface are known as reflected rays and the phenomenon is known as the reflection of the sound. Sound is reflected well from hard surfaces like a wall, metal sheet or a hardwood.

(b) Hard objects are the good reflectors of the sound, like steel and iron.

(c) There are two laws of reflections.

(i) The incident ray, the normal and the reflected ray, all lie in the same plane.
(ii) The angle of incidence is always equal to the angle of reflection.

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