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Question

A gas undergoes a cyclic process ABCDA as shown in the figure. The part ABC of process is semi-circular. The work done by the gas is:

  1. 400 pi straight J
  2. 2456 J
  3. 200 pi
  4. 1826 J

The correct answer is: 400 pi straight J


    W equals text  Area  end text A B C D A equals fraction numerator pi R squared over denominator 2 end fraction
equals fraction numerator 11 cross times left parenthesis 20 right parenthesis squared over denominator 2 end fraction equals 200 pi text  joule  end text

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