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JEE Main & Advanced Physics Wave Mechanics Question Bank Basics of Mechanical Waves

  • question_answer
    At what temperature velocity of sound is double than that of at 0°C                                        [RPMT 1999]

    A)            819 K                                       

    B)            819°C

    C)            600°C                                       

    D)            600 K

    Correct Answer: B

    Solution :

               \[v\propto \sqrt{T}\]Þ \[\frac{{{v}_{2}}}{{{v}_{1}}}=\sqrt{\frac{{{T}_{2}}}{{{T}_{1}}}}\]Þ\[2=\sqrt{\frac{{{T}_{2}}}{(273+0)}}\]                    \[\Rightarrow \] \[{{T}_{2}}=273\times 4=1092\,K={{819}^{o}}C\]


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