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Woollen clothes keep the body warm because of wool ___________

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Woollen clothes keep the body warm because of wool ___________

(a) Is a bad conductor

(b) Increases the temperature of body

(c) Decreases the temperature

(d) Has no effect

This question was posed to me during an interview.

This is a very interesting question from Thermal Conduction in section Mechanical Properties of Solids of Engineering Physics I

1 Answer

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The correct option is (a) Is a bad conductor

Explanation: Woollen fibres enclose a large amount of air in them. Both wool and air are bad conductors of heat and do not allow loss of heat from our body due to conduction.

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