Transmission Of Heat Question 275
Question: The radiation energy density per unit wavelength at a temperature T has a maximum at a wavelength l0. At temperature $ 2T $ , it will have a maximum at a wavelength
[UPSEAT 2004]
Options:
A) 4l0
B) 2l0
C) l0/2
D) l0/4
Show Answer
Answer:
Correct Answer: C
Solution:
$ \because \ {\lambda _{m}}T={{{\lambda }’} _{m}}{T}’ $
Therefore $ {\lambda _{0}}T={\lambda }’\times 2T $
Therefore $ {\lambda }’=\frac{{\lambda _{0}}}{2} $
BETA
