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JEE Main & Advanced Physics Thermodynamical Processes Question Bank Self Evaluation Test - Thermodynamics

  • question_answer
    For an ideal gas four processes are marked as 1, 2, 3 and 4 on P-V diagram as shown in figure. The amount of heat supplied to the gas in the process 1, 2, 3 and 4 are \[{{Q}_{1}}\], \[{{Q}_{2}}\], \[{{Q}_{3}}\] and \[{{Q}_{4}}\] respectively, then correct order of heat supplied to the gas is [AB is process-1, AC is process-2, AD is adiabatic process-3 and AE is process-4]

    A) \[{{Q}_{1}}>{{Q}_{2}}>{{Q}_{3}}>{{Q}_{4}}\]

    B) \[{{Q}_{1}}>{{Q}_{2}}>{{Q}_{4}}>{{Q}_{3}}\]

    C) \[{{Q}_{1}}>{{Q}_{4}}>{{Q}_{2}}>{{Q}_{3}}\]

    D) \[{{Q}_{1}}<{{Q}_{2}}<{{Q}_{3}}<{{Q}_{4}}\]

    Correct Answer: B

    Solution :

    [b] In process-1 heat supplied = area under AB curve\[~+n\times {{C}_{V}}\times 100\] (isobaric process) In process-2 heat supplied = area under AC curve              (isothermal process) In process-3 heat supplied = 0 (adiabatic process) In process-4 heat supplied \[=n\times {{C}_{v}}(T-600)\](isobaric process)


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