Transmission Of Heat Question 222
Question: If the temperature of a black body be increased from $ 27^{o}C $ to $ 327^{o}C $ the radiation emitted increases by a fraction of
[Pb. PET 1997; JIPMER 1999]
Options:
16
8
4
2
Show Answer
Answer:
Correct Answer: A
Solution:
$ \frac{E _{2}}{E _{1}}=\frac{T _{2}^{4}}{T _{1}^{4}}={{( \frac{237+227}{273+273} )}^{4}}={{( \frac{464}{546} )}^{4}}\approx 0.699$
BETA
