1.

1. (a) State two laws of reflection of sound.(b) Name three different materials which reflect sound.(c) Name three different materials which absorb sound.

Answer»

Two law of reflection of sound are :-

1 = The incident sound wave, the reflected sound wave, and normal at the point of incidence, all lie in the same plane

2 = The angle of reflection of sound is always equal to the angle of incidence of sound

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