Q.
The power radiated by a black body is P and it radiates maximum energy at wavelength, λ0. If the temperature of the black body is now changed so that it radiates maximum energy at wavelength 34λ0 the power radiated by it becomes nP. The value of n is
see full answer
Want to Fund your own JEE / NEET / Foundation preparation ??
Take the SCORE scholarship exam from home and compete for scholarships worth ₹1 crore!*
An Intiative by Sri Chaitanya
a
34
b
43
c
25681
d
81256
answer is C.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
From Wien's law, λmaxT= constant So, λmax1T1=λmax2T2⇒λ0T=3λ04T'⇒T'=43According to Stefan-Boltzmann law, energy emitted unit time by a black body is AeσT4, i.e., power radiated.∴ P∝T4 So, P2P1=T'T4⇒n=434=25681
Watch 3-min video & get full concept clarity