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Reflection of sound

Give three ex...

Question

Give three examples for each of the following:
1) Good reflectors of sound
2) Bad reflectors of sound

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Solution

1) Good reflectors of sound: Metal floor, brick wall, cliff
2) Bad reflectors of sound: Thick curtain, carpet, blanket

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Similar questions

Q. (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.

Q. A) A body of low thermal capacity gets heated or cooled quickly.
B) Good emitters are bad reflectors.

Q. The minimum distance of reflector surface from the source for listening the echo of sound is :

Q. A source of sound and a detector are placed at the same place on ground. At

t = 0

S

is projected towards reflector with velocity

v_{0}

in vertical upward direction and reflector starts moving down with constant velocity

v_{0}

t = 0

, the vertical separation between the reflector and source is

H (> \frac{v_{0}^{2}}{2 g})

. The speed of sound in air is

v (>> v_{0})

f_{0}

as the frequency of sound waves emitted by source. Find the frequency of sound received by detector after being reflected by reflector at

t = \frac{v_{0}}{2 g}

State True or False :

Shining bodies are poor absorbers or good reflectors of heat.

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