2. Solved Papers
  3. Manipal Engineering

Manipal Engineering Manipal Engineering Solved Paper-2013

  • question_answer
    The temperature of the black body increases from\[T\]to\[2T\]. The factor by which the rate of emission will increases is

    A)  4                            

    B)  2       

    C)  16         

    D)         8

    Correct Answer: C

    Solution :

    \[E=\sigma {{T}^{4}}\] \[{{T}_{1}}=T\],                 \[{{T}_{2}}=2T\] \[\frac{{{E}_{1}}}{{{E}_{2}}}=\frac{T_{1}^{4}}{T_{2}^{4}}={{\left( \frac{T}{2T} \right)}^{4}}=\frac{1}{16}\] \[{{E}_{2}}=16\,\,E\]


You need to login to perform this action.
You will be redirected in 3 sec spinner