MHT CET202617 April 2026Morning ShiftPhysicsThermal Properties of MatterActual
' x ' joule of heat is incident on a body. Out of it, the total heat reflected and transmitted by it is ' y ' joule. The absorption coefficient of the body is
Options
- Ax y
- Bx-y x
- Cy x-y
- Dx y-x
Correct answer
B. x-y x
Step-by-step solution
Total heat incident on the body is Q = x . Total heat reflected and transmitted by the body is Q_r + Q_t = y . From the conservation of energy, the total heat absorbed by the body is Q_a = Q - (Q_r + Q_t) = x - y . The absorption coefficient is defined as the ratio of the heat absorbed to the total heat incident on the body. a = Q_a Q = x - y x Answer: x-y x