Transmission Of Heat Question 280
Question: The intensity of radiation emitted by the sun has its maximum value at a wavelength of $ 510\ nm $ and that emitted by the north star has the maximum value at $ 350\ nm $ . If these stars behave like black bodies, then the ratio of the surface temperature of the sun and north star is
[IIT 1997 Cancelled; JIPMER 2000; AIIMS 2000]
Options:
A) 1.46
B) 0.69
C) 1.21
D) 0.83
Show Answer
Answer:
Correct Answer: B
Solution:
$ \frac{T _{S}}{T _{N}}$=
$\frac{(\lambda_N) _{\max} }{(\lambda_S) _{\max} }$=
$\frac{350}{510}=0.69 $
BETA
