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Heat energy is incident on the surface a...

Heat energy is incident on the surface at the rate of 1000 J/min. If coefficient of absorption is 0.8 and coefficient of reflection is 0.1 then heat energy transmitted by the surface in 5 minute is

A

100 J

B

500 J

C

710 J

D

900 J

Text Solution

Verified by Experts

The correct Answer is:
B
`Q_(i) =1000J//m`
`1= r+a+t`
`t= 1-0.1-0.8=0.1`
`Q_(t) =0.1xx1000xx5= 500J`
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