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Q.

A sample of gas is going through cyclic process, work-done by gas is

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a

$\frac{π}{4} (r_{1} r_{2})$

b

Both (A) & (B)

c

$π r_{2}^{2}$

d

$π r_{1}^{2}$

answer is C.

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Detailed Solution

$W =$ Area under $P \cdot V$ graph
$= \frac{π r_{1} r_{2}}{4}$

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