Q.
Variation of radiant energy emitted by sun, filament of tungsten lamp and welding are as a function of its wavelength is shown in figure. Which of the following option is the correct match?
A) Sun-$T_{1},\ $tungsten filament$- T_{2}$, welding$\ arc - T_{3}$
B) Sun-$T_{2}$, tungsten filament$- T_{1}$, welding$\ arc - T_{3}$
C) Sun-$T_{3},\ $tungsten filament$- T_{2}$, welding$\ arc - T_{1}$
D) Sun-$T_{1},\ $tungsten filament$- T_{3},\ $welding$\ arc - T_{2}$
Explanation
(c) $\lambda_{m}T = constant$
From the graph $T_{3} > T_{2} > T_{1}$
Temperature of sun will be maximum
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.