BSc Nursing GNM 2019 Solved Paper

According to Wien's law,
λmT=‌ constant (say b) ‌
where, λm is wavelength corresponding to maximum intensity of radiation and T is temperature of the body in kelvin.
∴‌‌‌

λm′

λm

=‌

T

T′

Given,T=1227+273=1500K,
T′‌‌=1227+1000+273=2500K
λm‌‌=5000Å
Hence, λm′=‌

1500

2500

×5000=3000Å