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

  • question_answer
    The radiation energy density per unit wavelength at a temperature T has a maximum at a wavelength l0. At temperature \[2T\], it will have a maximum at a wavelength [UPSEAT 2004]

    A)            4l0

    B)            2l0

    C)            l0/2                                         

    D)            l0/4

    Correct Answer: C

    Solution :

               \[\because \ {{\lambda }_{m}}T={{{\lambda }'}_{m}}{T}'\] Þ \[{{\lambda }_{0}}T={\lambda }'\times 2T\] Þ \[{\lambda }'=\frac{{{\lambda }_{0}}}{2}\]


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