JCECE Medical JCECE Medical Solved Paper-2011

  • question_answer
    A black body has maximum energy at wavelength\[{{\lambda }_{m}}\]at temperature 2000 K. The corresponding wavelength at a temperature of 3000 K will be          

    A) \[\frac{3}{2}{{\lambda }_{m}}\]

    B)  \[\frac{2}{3}{{\lambda }_{m}}\]

    C)  \[\frac{4}{9}{{\lambda }_{m}}\]

    D)  \[\frac{9}{4}{{\lambda }_{m}}\]

    Correct Answer: B

    Solution :

     From Wiens law \[2000\times {{\lambda }_{m}}=3000\times \lambda {{}_{m}}\] \[\lambda {{}_{m}}=\frac{2}{3}{{\lambda }_{m}}\]


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