If the concrete roof of a house is replaced by a polished metallic surface, the temperature inside the house will ___________.

increase

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decrease

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remain unchanged.

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None of the above

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Solution

The correct option is B decrease
If the concrete roof of a house is replaced by a polished metallic surface, it reflects most of the sun rays which fall on it.
Polished metal surface is a good reflector of radiant heat energy coming from the sun. Hence it helps to reduce the temperature inside the house.

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