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AMU Medical AMU Solved Paper-2002

  • question_answer
    In   Wiens   formula   \[{{\lambda }_{m}}\text{T}=\text{b},\]   where \[{{\lambda }_{m}}=\]wavelength and T = temperature. The dimensions of Wiens constant b are

    A) \[\left[ {{\text{L}}^{\text{3}}} \right]\]                                  

    B)  [LT]

    C) \[[{{L}^{-1}}]\]                                  

    D)  \[[L\theta ]\]

    Correct Answer: D

    Solution :

    From Wiens displacement law \[{{\lambda }_{m}}T=b\] Dimensions of b = dimensions of \[{{\lambda }_{m}}\]                                 x dimensions of T. \[\Rightarrow \]               \[[b]=[L]\,[\theta ]\] \[\Rightarrow \]               \[[b]=[L\,\theta ]\]


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