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Absorptivity of a body will be equal to its emissivity

This question belongs to Mechanical Engineering Heat And Mass Transfer
Heat and Mass Transfer
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Absorptivity of a body will be equal to its emissivity

Answer & Solution
Correct Answer: Option C
Kirchhoff's law states that For an arbitrary body emitting and absorbing thermal radiation in thermodynamic equilibrium, the emissivity is equal to the absorptivity.
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