Question

Which one of the following is a good radiator of heat?
a) a shining silvered surface
b) a dull black surface
c) a white surface
d) a green colored surface ​

Answer 1

Answer:

b.a dull black surface

Answer 2

Answer:

Among the given options, a dull black surface is a good radiator of heat.

Explanation:

Like we have learnt in our lessons, black is the ideal colour to absorb and radiate heat. White, on the other hand, is the best color to reflect heat. It is the poorest heat-absorbing color.

A shining silver surface is a good reflector but doesn't radiate too much heat. It can also help converge heat rays but never radiate.

A green-colored surface is moderately present between the 2 colors of absorption and reflection - black and white, respectively.

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