The graph shown in fig. represents energy density Eλ versus λ for three sources : sun, welding arc and tungsten filament. For λmax, correct combination will be
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a
Sun-T1, tungsten filament-T2, welding arc-T3
b
Sun-T2, tungsten filament-T1, welding arc-T3
c
Sun-T3, tungsten filament-T2, welding arc-T1
d
Sun-T3, tungsten filament-T3, welding arc-T2,
answer is C.
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Detailed Solution
According to Wien's displacement lawλmT= constant T3>T2>T1For sun T is maximum and hence λm is minimum∴ Option (c) is correct.