Physics
Wollen clothes keep the body warm because

Wool is a bad conductor
Wool rejects heat from the outer objects
Wool absorbs radiant heat from outer objects
Wool increases the temperature of the body

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Physics
Indicate the false statement about the resistance of a wire

It is directly proportional to the length of wire
It depends on material of wire
It is directly proportional to the area of cross-section of wire
Resistance of metallic wire increases with increase in temperature

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