Heat Transfer - Conduction and Convection: Practice Problem & Solution
Assertion (A): Woolen clothes keep the body warm in winter. Reason (R): Woolen fibres enclose a large amount of air in them & both air and wool are the bad conductors of heat.
Solution Explained:
To solve this problem, we apply the core principles of Heat Transfer - Conduction and Convection. Understanding the underlying formula is key to arriving at the correct answer below:
Woolen clothes trap air, which is a poor conductor of heat, reducing heat loss from the body. Wool itself is also a poor conductor. Both A and R are true, and R explains A.
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