MHT CET202310 May 2023Morning ShiftPhysicsThermal Properties of MatterActual
A black body radiates maximum energy at wavelength ' ' and its emissive power is E . Now due to change in temperature of that body, it radiates maximum energy at wavelength 2 3 . At that temperature emissive power is
Options
- A51 E 8
- B81 E 16
- C61 E 27
- D71 E 19
Correct answer
B. 81 E 16
Step-by-step solution
From Wien's Displacement law, _ = b T T = b _ From Stefan-Boltzmann law E = T ^4= ( b _ )^4 Let the new emissive power be E ^ . aligned E^ & = ( b 2 _ 3 )^4 E ^ & = 81 16 E aligned