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Question
Physics
The amount of radiation emitted by a perfectly black body is proportional to
Q. The amount of radiation emitted by a perfectly black body is proportional to
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A
temperature oh ideal gas scale
B
fourth root of temperature on ideal gas scale
C
fourth power of temperature on ideal gas scale
D
square of temperature on ideal gas scale
Solution:
According to the Stefan’s law the radiant energy emitted by a perfectly black body per unit area per second is directly proportional to the fourth power of its absolute temperature
R
∝
T
4
or
R
=
σ
T
4
where
σ
is a Stefan’s constant