JEE Main & Advanced Physics Transmission of Heat Question Bank Topic Test - Transmission of Heat (3-5-21)

  • question_answer
    The radiation energy density per unit wavelength at a temperature T has a maximum at a wavelength \[{{\lambda }_{0}}\]. At temperature \[2T\], it will have a maximum at a wavelength

    A) 4\[{{\lambda }_{0}}\]

    B) 2\[{{\lambda }_{0}}\]

    C) \[{{\lambda }_{0}}\]/2

    D) \[{{\lambda }_{0}}\]/4

    Correct Answer: C

    Solution :

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

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