A) \[1:256\]
B) \[1:64\]
C) \[1:4\]
D) \[1:16\]
Correct Answer: A
Solution :
From Stefans law of radiation \[E=\sigma \,{{T}^{4}}\] where \[\sigma \] is Stefans constant and T is absolute temperature. Given, \[{{T}_{1}}={{27}^{o}}C=273+27=300\,K\], \[{{T}_{2}}={{927}^{o}}C=273+927=1200\,K\] \[\therefore \] \[\frac{{{E}_{1}}}{{{E}_{2}}}=\frac{{{(300)}^{4}}}{{{(1200)}^{4}}}=\frac{1}{256}\] Note: As the temperature is increased more and more energy is radiated.
You need to login to perform this action.
You will be redirected in
3 sec
