J & K CET Medical J & K - CET Medical Solved Paper-2008

  • question_answer
    Wiens displacement law for emission of radiation can be written as

    A) \[{{\lambda }_{\max }}\] is proportional to absolute temperature (T)

    B) \[{{\lambda }_{\max }}\] is proportional to square of absolute temperature \[({{T}^{2}})\]

    C) \[{{\lambda }_{\max }}\] is inversely proportional to absolute temperature (T)

    D) \[{{\lambda }_{\max }}\] is inversely proportional to square of absolute temperature \[({{T}^{2}})\] (\[{{\lambda }_{\max }}\] = wavelength whose energy density is greatest)

    Correct Answer: C

    Solution :

                     Wiens displacement law \[{{\lambda }_{max}}.T=b\]        where b = Wiens constant \[\therefore \]  \[{{\lambda }_{\max }}\propto \frac{1}{T}\] Thus,\[{{\lambda }_{\max }}\]is inversely proportional to absolute temperature (T).


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