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Q.

There are two processes ABC and DEF. In which of the process is the amount of work done by the gas is greater?

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a

ABC

b

DEF

c

Equal in both processes

d

it cannot be predicted

answer is B.

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Detailed Solution

WABC=πr22=π(6)22=18π⇒WDEF=π×322+π×324+(15−12)×18= 6.75π+ 54 WDEF> WABC
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