The magnitude of heat exchanged by a system for the given cyclic process ABCA (as shown in figure) is (in SI unit) [2025]

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Solution

Q.
The magnitude of heat exchanged by a system for the given cyclic process ABCA (as shown in figure) is (in SI unit) [2025]

1 10 $π$

2 5 $π$

3 zero

4 40 $π$

Ans.
(2)

$W = \frac{1}{2} π R^{2}$

$= \frac{1}{2} \times π \times (\frac{200}{2} \times 10^{3}) \times \frac{200}{2} \times 10^{- 6} = \frac{10 π}{2} = 5 π J$

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