Variation of radiant energy emitted by sun, filament of tungsten lamp and welding arc as a function of its wavelength is shown in figure. Which of the following option is the correct match?

Options

A. Sun-`T_3`, tungsten filament-`T_1`, welding arc-`T_2`
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_2`, welding arc-`T_3`

Answer

A

Explanation

According to Wien's displacement law
`lambda xx T=` constant
here `lambda_(m3) lt lambda_(m2) lt lambda_(m1)`
`implies T_(3) gt T_(2) gt T_(1)`

The temperature of the sun is higher than that of the welding are which in turn is greater than the tungsten filament.
(a) is the correct option.