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Experimental investigations show that the intensity of solar radiation is maximum for a wavelength 480 nm in the visible region. Estimate the surface temperature of sun. Given Wein’s constant b = 2.88 × 10–3 mK. (A) 4000 K (B) 6000 K (C) 8000 K (D) 106 K

Experimental investigations show that the intensity of solar radiation is maximum for a wavelength 480 nm in the visible region.
Estimate the surface temperature of sun. Given Wein’s constant b = 2.88 × 10–3 mK.
(A) 4000 K (B) 6000 K (C) 8000 K (D) 106
K

Grade:

2 Answers

Arun
25763 Points
one year ago
The Wein's displacement law states that,
λmaxT=b
where b is the Wein's constant 

It can be rearranged to obtain the temperature as follows:
T=λmaxb
 
substituting the given values, we get 
T=480×109m2.88×103mk= 6000 K
Vikas TU
14149 Points
one year ago
According to Wien's displacement law,
λmaxT=b
where b is the Wien's constant
∴T=b/λmax
Substituting the given values, we get
T=(2.88×10^−3mK)/ (480×10^−9m) =6000K

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