Transmission Of Heat Question 294
Question: The radiation energy density per unit wavelength at a temperature T has a maximum at a wavelength $ {\lambda _{0}} $ . At temperature $ 2T $ , it will have a maximum at a wavelength
Options:
A) 4$ {\lambda _{0}} $
B) 2$ {\lambda _{0}} $
C) $ {\lambda _{0}} $ /2
D) $ {\lambda _{0}} $ /4
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Answer:
Correct Answer: C
Solution:
$ \because \ {\lambda _{m}}T={{{\lambda }’} _{m}}{T}’ $
$ \Rightarrow $ $ {\lambda _{0}}T={\lambda }’\times 2T $
$ \Rightarrow $ $ {\lambda }’=\frac{{\lambda _{0}}}{2} $
BETA
