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EAMCET Medical EAMCET Medical Solved Paper-2003

  • question_answer
    A particular star (assuming it as a black body) has a surface temperature of about \[5\times {{10}^{4}}K\]The wavelength in nanometre at which its radiation becomes maximum is: (b = 0.0029 mK)

    A)  48                                         

    B)  58

    C)  60                                         

    D)  70

    Correct Answer: B

    Solution :

                     Given: Surface temperature \[(b=0.0029\,mK)T=5\times {{10}^{4}}K\] Applying, Weins displacement law \[{{\lambda }  {m}}T=b=cons\tan t\] \[{{\lambda }_{m}}\times 5\times {{10}^{4}}=0.0029\] \[{{\lambda }_{m}}=\frac{0.0029}{5\times {{10}^{4}}}=58\times {{10}^{-9}}m\] \[=58\,nm\]


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