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

  • question_answer
     If the temperature of a black body be increased from \[{{27}^{o}}C\] to \[{{327}^{o}}C\] the radiation emitted increases by a fraction of  [Pb. PET 1997; JIPMER 1999]

    A)            16  

    B)            8

    C)            4    

    D)            2

    Correct Answer: A

    Solution :

               \[\frac{{{E}_{2}}}{{{E}_{1}}}=\frac{T_{2}^{4}}{T_{1}^{4}}={{\left( \frac{237+227}{273+27} \right)}^{4}}={{\left( \frac{600}{300} \right)}^{4}}=16\]


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