CET Karnataka Medical CET - Karnataka Medical Solved Paper-2002

  • question_answer
    Under  the  same conditions  of temperature and pressure, the velocity of sound in oxygen and hydrogen are \[{{\upsilon }_{O}}\]and \[{{\upsilon }_{H}}.\]Then:

    A)  \[{{v}_{O}}=4\upsilon H\]

    B)  \[{{\upsilon }_{H}}=4{{\upsilon }_{O}}\]

    C) \[{{\upsilon }_{O}}={{\upsilon }_{H}}\]

    D)  \[{{\upsilon }_{H}}=16{{v}_{O}}\]

    Correct Answer: B

    Solution :

    \[{{\upsilon }_{O}}=\sqrt{\frac{3RT}{{{M}_{O}}}}{{M}_{H}}=2,{{M}_{O}}=32\] \[{{\upsilon }_{H}}=\sqrt{\frac{3RT}{{{M}_{H}}}}\] \[\frac{{{\upsilon }_{O}}}{{{\upsilon }_{H}}}=\sqrt{\frac{{{M}_{H}}}{{{M}_{O}}}}=\sqrt{\frac{2}{32}}=\frac{1}{4}\] \[{{\upsilon }_{H}}=4{{\upsilon }_{O}}\]


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