Absorptivity of a body will be equal to its emissivity?

Question

Absorptivity of a body will be equal to its emissivity?

At all temperatures
At one particular temperature
When system is under thermal equilibrium
At critical temperature

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

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AhmedNazir · Accepted Answer · 2022-09-01T13:21:41+06:00

AhmedNazir

Answer: Option 3

Kirchhoff's law states that For an arbitrary body emitting and absorbing thermal radiation in thermodynamic equilibrium, the emissivity is equal to the absorptivity.

4 views Answered 2022-09-01 13:21