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MHT CET 2026 (13 May, Shift 1) · Thermal Radiation: Black Body, Stefan & Wien

Thermal Radiation: Black Body, Stefan & Wien question from MHT CET 2026 (13 May, Shift 1)

Q2MHT CET 2026 · 13 MAY · SHIFT 1Easy

Thermal Radiation: Black Body, Stefan & Wien

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

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Answer: (b)

$t = 1 - a - r = 1 - 0.8 - 0.1 = 0.1$
Energy incident in 5 min $= 5000$ J
Transmitted $= 0.1\times5000 = 500$ J
So the answer is (b) 500 J.

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