Transmission Of Heat Question 202
Question: The rate of radiation of a black body at 0°C is EJ/sec. The rate of radiation of this black body at $ 273^{o}C $ will be
[MP PMT 1989; Kerala PET 2002; UPSEAT 2001]
Options:
A) $ 16\ E $
B) $ T _{2}=8T _{1} $
C) $ 4\ E $
D) $ E $
Show Answer
Answer:
Correct Answer: A
Solution:
$ \frac{E _{1}}{E _{2}}={{( \frac{T _{1}}{T _{2}} )}^{4}}\Rightarrow \frac{E}{E _{2}}={{( \frac{273+0}{273+273} )}^{4}} $
$ \Rightarrow E _{2}=16\ E $ .
BETA
