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When q(1) joules of radiation is inciden...

When `q_(1)` joules of radiation is incident on a body if reflects and transmits total of `q_(2)` joules. Find the emissivity of the body.

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Verified by Experts

The correct Answer is:
`(q_(1)-q_(2))/(q_(1))`

Absorptive power `=(q_(1)-q_(2))/(q_(1)) = (Q_(a))/(Q_(i))`
Emissivity `= (q_(1)-q_(2))/(q_(1))`
Absorptive power = Emissivity
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