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BVP Medical BVP Medical Solved Paper-2009

  • question_answer
    If we consider solar system consisting of the earth and sun only as of the ideal thermodynamic system. The sun works as source of energy having temperature 6000 K and earth as sink having temperature 300 K, the efficiency of solar system would be on the basis of exchange of radiations

    A)  30%                                      

    B)  65%

    C)  75%                                      

    D)  95%

    Correct Answer: D

    Solution :

                    Temperature of source \[{{T}_{1}}=6000K\] Temperature of sink \[{{T}_{2}}=300K\] Then efficiency \[\eta =1-\frac{{{T}_{2}}}{{{T}_{1}}}=1-\frac{300}{6000}=\frac{19}{20}\] Efficiency percentage \[=\frac{19}{20}\times 100=95%\]


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