Q.

In the P-V diagram shown in figure, ABC is a semicircle. Find the work done in the process ABC.

Moderate

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a

450 π kJ

b

275 π kJ

c

750 π kJ

d

175 π kJ

answer is 3.

(Detailed Solution Below)

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Detailed Solution

W = π4(P2-P1)(V2-V1)          W = π4(4-1)×105×(20-10) kJ                 = π4×3×10×105 = 750π kJ
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