Q. Wien’s constant is $2892 \times 10^{- 6}$ MKS unit and the value of $\lambda_{m}$ from moon is 14.46 microns. What is the surface temperature of moon
A) $100\ K$
B) $300\ K$
C) $400\ K$
D) $200\ K$
Explanation
(d) $\lambda_{m}T = 2892 \times 10^{- 6} \Rightarrow T = \frac{2892 \times 10^{- 6}}{14.46 \times 10^{- 6}} = 200\ K$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.