IIT JAM
Subrat Asked a Question
January 8, 2021 10:55 pmpts 30 pts
  • IIT JAM
  • Physics (PH)

Thermodynamics

(15.) For a diatomic ideal gas near room temperature. What fraction of the heat supplied is available SoATO for external work if the gas is expanded at constant pressure? (A) 5 (B) 3 (C) (D) 6
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  • Chandra dhawan
    answer is d
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  • Dhairya sharma Best Answer
    d part Q=nCpdt U=nCvdt w=Q-U first law we need to find w/Q ={Cp-Cv}/Cp Cp for diatomic is 7R/2 and Cp-Cv=R so the answer is 2/7
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    Subrat
    crystal clear mam... ty
  • Prashant kumar
    Answer
    • cropped7359042432985932099.jpg
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    Subrat
    2/7 ans given...
  • Subrat
    how 2/7 comes..
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  • Subrat
    what we have to calculate mam....?
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  • Subrat
    sorryyyy.... I can't understand 😔
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  • Dhairya sharma
    Cp for diatomic is 7R/2 and Cp-Cv=R so the answer is 2/7. soo the correct option is d.
    Likes(1) Reply(0)
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