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Question

A polished silvery surface is a-


A

Good absorber and good reflector of heat

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B

Good absorber and bad reflector of heat

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C

Poor absorber and good reflector of heat

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D

Poor absorber and bad reflector of heat

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Solution

The correct option is C

Poor absorber and good reflector of heat


Explanation for correct option:

C. Poor absorber and good reflector of heat

Polished silvery surface:

  • A polished silvery surface works as a good reflector of light.
  • An example of a polished silver surface is the mirror. The mirror is highly polished as well as smooth as the light rays from the mirrors are perfectly reflected.
  • A mirror however is said to be the white body. The mirror does not absorb the heat waves as it reflects them.
  • The heat waves are not generated by the mirror thus the mirror does not serve as a good radiator.
  • Therefore, a polished silvery surface that is the mirror is a poor absorber as well as a good reflector.

Explanation for incorrect options:

A polished silvery surface serves as s good reflector while a poor absorber. Thus options A, B, and D are incorrect.

Hence the correct option is C i.e. Poor absorber and good reflector of heat.


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