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Tardigrade
Question
Physics
The unit of Stefan's constant is
Q. The unit of Stefan's constant is
1998
128
KCET
KCET 2006
Thermal Properties of Matter
Report Error
A
W
m
−
2
k
−
1
15%
B
Wm
k
−
4
8%
C
W
m
−
2
k
−
4
67%
D
N
m
−
2
k
4
10%
Solution:
According to Stefan's law, the energy radiated per second or power radiated is given by
P
=
σ
A
T
4
σ
=
A
T
4
P
Therefore, unit of
σ
=
m
2
K
4
W
=
W
m
−
2
K
−
4