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Woolen clothes keep us warm during winte...

Woolen clothes keep us warm during winter because ____

A

wool is a poor conductor of heat.

B

wool is a good conductor of heat.

C

air trapped in between the fibres prevents the heat flow.

D

Both (a) and (c)

Text Solution

Verified by Experts

The correct Answer is:
D
Woollen clothes keep us warm during winter because wool is a poor conductor of heat and at the same time air trapped in-between the fibres minimizes heat flow. Here air acts as a thermal insulator.
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