Student Login

Home›Chapters›Heat Transfer and Radiation PYQs›Thermal Radiation: Black Body, Stefan & Wien›Question 1

MHT CET 2026 (13 May, Shift 2) · Thermal Radiation: Black Body, Stefan & Wien

Thermal Radiation: Black Body, Stefan & Wien question from MHT CET 2026 (13 May, Shift 2)

Q1MHT CET 2026 · 13 MAY · SHIFT 2Easy

Thermal Radiation: Black Body, Stefan & Wien

If $150$ J of energy is incident on area $2\text{ m}^2$ and amount of heat reflected is $15$ J, coefficient of absorption is $0.6$ the amount of energy transmitted is

Show answer and solution

Answer: (b)

$a + r + t = 1$ ; absorbed $= 0.6\times150 = 90$ J
Transmitted $= 150 - 90 - 15 = 45$ J
So the answer is (b) 45 J.

Report a mistake

More questions on Thermal Radiation: Black Body, Stefan & Wien

Heat energy is incident on the surface at the rate of 1000 J/min. If coefficient of…MHT CET 2026 (13 May, Shift 1)
When 170 J of energy is incident on a surface of a body, 17 J of energy is reflected by…MHT CET 2026 (19 Apr, Shift 1)
' x ' joule of heat is incident on a body. Out of it, the total heat reflected and…MHT CET 2026 (17 Apr, Shift 1)
A perfectly black body radiates power at temperature T₁ K. If it is to radiate 16 times…MHT CET 2026 (19 May, Shift 1)
The temperature of a black body is increased by 50% then the percentage increase of…MHT CET 2026 (15 May, Shift 1)
A black body is at temperature 827° C. The rate at which it emits energy is proportional…MHT CET 2026 (19 Apr, Shift 1)
Temperature of two stars are in the ratio 3: 2. If wavelength of maximum intensity of…MHT CET 2026 (20 May, Shift 1)
Identify the INCORRECT statement about the black body radiationMHT CET 2026 (20 May, Shift 1)