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Question

One mole of an ideal monoatomic gas undergoes a cyclic process as shown in figure. Temperature at point 1 = 300 K and process 2-3 is isothermal. Net work done by gas in complete cycle is

  1. open parentheses 9 left parenthesis n 3 plus 12 right parenthesis P subscript 0 end subscript V subscript 0 end subscript close    
  2. left parenthesis 9 l n 3 plus 4 right parenthesis P subscript 0 end subscript V subscript 0 end subscript    
  3. left parenthesis 9 l n 3 minus 4 right parenthesis P subscript 0 end subscript V subscript 0 end subscript    
  4. open parentheses 9 open parentheses n 3 minus 8 close parentheses P subscript 0 end subscript V subscript 0 end subscript close    

The correct answer is: left parenthesis 9 l n 3 minus 4 right parenthesis P subscript 0 end subscript V subscript 0 end subscript


    W equals W subscript 12 end subscript plus W subscript 2 s end subscript plus W subscript 31 end subscript equals fraction numerator 1 over denominator 2 end fraction open parentheses 4 P subscript 0 end subscript close parentheses open parentheses 2 V subscript 0 end subscript close parentheses plus n R T divided by n left parenthesis 3 right parenthesis minus P subscript 0 end subscript open parentheses 8 V subscript 0 end subscript close parentheses equals negative 4 P subscript 0 end subscript V subscript 0 end subscript plus 9 P subscript 0 end subscript V subscript 0 end subscript open parentheses n 3 equals left parenthesis 9 n 3 minus 4 right parenthesis P subscript 0 end subscript V subscript o end subscript close

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