2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-87

  • question_answer
    A metal piece is heated upto \[T{}^\circ \] abs. The temperature of the surrounding is t° abs. The heat in the surrounding due to radiation is proportional to

    A) \[{{(T-T)}^{4}}\]         

    B)        \[{{T}^{4}}-{{t}^{4}}\]

    C) \[{{(T-t)}^{1/4}}\]       

    D)        \[{{T}^{2}}-{{t}^{2}}\]

    Correct Answer: B

    Solution :

    [b] According to Stefan' law heat emitted per second per unit area a\[\alpha (T{}_{1}^{4}-T{}_{2}^{4})\] where \[{{T}_{1}}\] is the temperature of body & \[{{T}_{2}}\] is the temperature of surrounding (\[{{T}_{1}}\] & \[{{T}_{2}}\] are on Kelvin scale).


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