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A spherical body of area A, and emissivi...

A spherical body of area A, and emissivity e = 0.6 is kept inside a black body. What is the rate at which energy is radiated per second at temperature T

A

`0.4AT^4`

B

`0.8AT^4`

C

`6.0AT^4`

D

`1.0AT^4`

Text Solution

Verified by Experts

The correct Answer is:
None of these
(d) In this equation the given option are wrong as all the fout options contain e in place of sigma.
When a spherical body is kept inside a perfectely block
body then the total heat radiated by the body is equal
to that the black body.
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