Physics
Heat
Easy

Question

The ratio of work done by an idea l diatomic gas to the heat supplied by the gas in an isobaric process is

  1. 5/7
  2. 3/5
  3. 2/7
  4. 5/3

The correct answer is: 2/7


    table attributes columnalign left columnspacing 1em rowspacing 4 pt end attributes row cell straight capital delta U equals n C subscript V straight capital delta T equals n left parenthesis 5 divided by 2 right parenthesis R straight capital delta T end cell row cell straight capital delta Q equals n C subscript P straight capital delta T equals n left parenthesis 7 divided by 2 right parenthesis R straight capital delta T end cell end table
W equals straight capital delta Q minus straight capital delta U equals fraction numerator n 7 over denominator 2 end fraction R straight capital delta T minus fraction numerator n 5 over denominator 2 end fraction R straight capital delta T equals n R straight capital delta T
fraction numerator W over denominator straight capital delta U end fraction equals 2 over 7

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