Transmission Of Heat Question 226
Question: Temperature of a black body increases from $ 327^{o}C,\text{to},\text{92}{{\text{7}}^{\text{o}}}C $ , the initial energy possessed is 2KJ, what is its final energy
[DCE 2001]
Options:
A) 32 KJ
B) 320 KJ
C) 1200 KJ
D) None of these
Show Answer
Answer:
Correct Answer: A
Solution:
$ \frac{Q _{2}}{Q _{1}}={{( \frac{T _{2}}{T _{1}} )}^{4}}={{( \frac{273+927}{273+327} )}^{4}}={{( \frac{1200}{600} )}^{4}}=16 $
Therefore Q2 $ =32\ KJ $
BETA
