A) \[W-{{m}^{2}}-{{K}^{4}}\]
B) \[W-{{m}^{2}}/{{K}^{4}}\]
C) \[W/{{m}^{2}}-K\]
D) \[W/{{m}^{2}}-{{K}^{4}}\]
Correct Answer: D
Solution :
According to Stefan's law, \[E\,\propto \,\,{{T}^{4}}\] or \[E\,=\,\,\sigma \,{{T}^{4}}\] Here, \[\sigma \] is proportionality constant called the Stefan's constant. The unit of Stefan's constant is watt \[metr{{e}^{-2}}\,kelvi{{n}^{-4}}\,\,or\,W/{{m}^{2}}-{{K}^{4}}\]
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