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

  • question_answer
    Solar radiation emitted by sun resembles that emitted by a black body at a temperature of 6000 K. Maximum intensity is emitted at a wavelength of about 4800Å. If the sun were to cool down from 6000 K to 3000 K  then the peak intensity would occur at a wavelength    [UPSEAT 2002]

    A)            4800Å                                      

    B)            9600Å

    C)            7200Å                                      

    D)            6400Å

    Correct Answer: B

    Solution :

               \[{{\lambda }_{{{m}_{2}}}}=\frac{{{\lambda }_{{{m}_{1}}}}{{T}_{1}}}{{{T}_{2}}}=\frac{4800\times 6000}{3000}\]=\[9600{\AA}\]


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