Transmission Of Heat Question 271
Question: A black body at a temperature of 1640 K has the wavelength corresponding to maximum emission equal to 1.75$ \mu $ . Assuming the moon to be a perfectly black body, the temperature of the moon, if the wavelength corresponding to maximum emission is 14.35 m is
[Kerala (Med.) 2002]
Options:
A) 100 K
B) 150 K
C) 200 K
D) 250 K
Show Answer
Answer:
Correct Answer: C
Solution:
$ \frac{T _{2}}{T _{1}}=\frac{{\lambda _{m _{1}}}}{{\lambda _{m _{2}}}}=\frac{1.75}{14.35}\Rightarrow T _{2}=\frac{1.75}{14.35}\times 1640=200\ K $
BETA
