Question

A polished silvery surface is a-

• A. Good absorber and good reflector of heat
• B. Good absorber and bad reflector of heat
• C. Poor absorber and good reflector of heat
• D. Poor absorber and bad reflector of heat

Answer 1

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.