NEET UG 2018 · Physics · Question 43
NEET 2018 Physics, question 43
Question 43 of the NEET 2018 paper (code AA) is a Physics question from Thermal Properties of Matter. Its idea, Wien's Displacement Law, was asked only this once in NEET 2017–2026. The CBSE official answer key gives option 1.
Updated 2026-10-08
Q43 · Physics
The power radiated by a black body is P and it radiates maximum energy at wavelength, . If the temperature of the black body is now changed so that it radiates maximum energy at wavelength , the power radiated by it becomes nP. The value of n is
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Official answer: option 1 · CBSE official answer key
Same idea
The only question on Wien's Displacement Law
No other NEET paper from 2017–2026 tested this exact idea.
Wien's Displacement Law: every question and how it was framed
The chapter
Thermal Properties of Matter in ten years of NEET
10 questions from 2017–2026, asked in 8 of 10 papers, about 1.0 a paper. Heat Transfer and Thermal Expansion alone had 8.