For an opaque body, coefficient of refle...

For an opaque body, coefficient of reflection is 0.3. If 200 J of heat energy is incident on it then the heat absorbed by the body will be

140 J

70 J

zero

60 J

Text Solution

Verified by Experts

The correct Answer is:

For an opaque body, t = 0, `" "thereforea+r+t=1`
`thereforea+0.3+0=1" "thereforea=0.7`
`therefore` The heat absorbed by the body `Q_(a)=0.7xx200=140J`

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