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JCECE Medical JCECE Medical Solved Paper-2012

  • question_answer
    The ratio of two specific heats of gas \[{{C}_{p}}/{{C}_{V}}\]for argon is 1.6 and for hydrogen is 1.4. If adiabatic elasticity of argon at pressure p is E, then at what pressure the adiabatic elasticity of hydrogen will also be equal to E?

    A)  p

    B)  1.4 p

    C)  \[\frac{7}{8}p\]

    D)  \[\frac{8}{7}p\]

    Correct Answer: D

    Solution :

     Adiabatic elasticity \[E=\gamma p,\] For argon,     \[{{E}_{Ar}}=1.6\,p\]            ...(i) For hydrogen, \[{{E}_{H}}=1.4\,p\]         ...(ii) As elasticity of argon and hydrogen are equal \[\therefore \] \[1.6p=1.4\,p\] or \[p=\frac{1.6}{1.4}=\frac{8}{7}p\]


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