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CMC Medical CMC-Medical Ludhiana Solved Paper-2007

  • question_answer
    Two gases are at absolute temperatures 300 K and 350 K respectively. The ratio of average kinetic energy of their molecules is  

    A)  \[6:7\]                                 

    B)  \[1:5\]

    C)  \[1:1\]                                 

    D)  \[5:1\]

    Correct Answer: A

    Solution :

                    From the relation, \[\overline{KE}=\frac{3}{2}kT\] \[\Rightarrow \]               \[\frac{{{(\overline{KE})}_{1}}}{{{(\overline{KE})}_{2}}}=\frac{{{T}_{1}}}{{{T}_{2}}}\] Given :  \[{{T}_{1}}=300K,\,\]\[{{T}_{2}}=350K\] \[\Rightarrow \]               \[\frac{{{(\overline{KE})}_{1}}}{{{(\overline{KE})}_{2}}}=\frac{300}{350}=\frac{6}{7}\]


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