First slide

Radiation

Question

The unit of Stefan's constt. is:

Moderate

A

N-m sec^-1(K)^-4
B

watt m^-2(K)^-4
C

J-s m^-2(K)^-4
D

erg s^-1 m^-3(K)^-4

Solution

$σ = \frac{E}{t A T^{4}}$

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