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JEE Main & Advanced Physics Transmission of Heat Question Bank Radiation Wein's law

  • question_answer
    The intensity of radiation emitted by the sun has its maximum value at a wavelength of \[510\ nm\] and that emitted by the north star has the maximum value at \[350\ nm\]. If these stars behave like black bodies, then the ratio of the surface temperature of the sun and north star is [IIT 1997 Cancelled; JIPMER 2000; AIIMS 2000]

    A)            1.46                                          

    B)            0.69

    C)            1.21                                          

    D)            0.83

    Correct Answer: B

    Solution :

               \[\frac{{{T}_{S}}}{{{T}_{N}}}=\frac{{{({{\lambda }_{N}})}_{\max }}}{{{({{\lambda }_{S}})}_{\max }}}=\frac{350}{510}=0.69\]


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