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A poor man wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because:

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friction between the layers of newspaper produces heat

newspaper is a conductor of heat

air trapped between the layers of newspaper is a bad conductor of heat

newspaper is at a higher temperature than the temperature of the surroundings

answer is C.

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Detailed Solution

This helped him to keep himself warm because air trapped between the layers of newspaper is a bad conductor of heat.

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