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Question
Given that p Joules of heat is incident on a body and out of it q Joules is reflected and transmitted by it, the absorption coefficient of the body is
Given that p Joules of heat is incident on a body and out of it q Joules is reflected and transmitted by it, the absorption coefficient of the body is
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Solution
The correct option is A (p−q)/p
Coefficient of absorption is defined as the ration of amount of radiation a body absorbs to the amount of radiation that is incident on the body.
Incident radiation = p
Rejected radiation = q
Hence absorbed radiation must be = p−q
From the definition of absorptive power it follows that the power = p−qp
Coefficient of absorption is defined as the ration of amount of radiation a body absorbs to the amount of radiation that is incident on the body.
Incident radiation = p
Rejected radiation = q
Hence absorbed radiation must be = p−q
From the definition of absorptive power it follows that the power = p−qp
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