Transmission Of Heat Question 260
Question: The wavelength of maximum emitted energy of a body at 700 K is 4.08 $ \mu m $ . If the temperature of the body is raised to 1400 K, the wavelength of maximum emitted energy will be
[MP PET 1990]
Options:
A) $ 1.02\ \mu m $
B) 16.32$ \mu m $
C) 8.16$ \mu m $
D) 2.04$ \mu m $
Show Answer
Answer:
Correct Answer: D
Solution:
$ {\lambda _{m _{1}}}T _{1}={\lambda _{m _{2}}}T _{2}$
$\Rightarrow {\lambda _{m _{2}}}=\frac{\lambda _{m _{1}}T _{1}}{T _{2}} $
$ =4.08\times \frac{700}{1400}=2.04,m $
BETA
