Question

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

Answer 1

The Correct Option is B

Explanation:
${\lambda }_{=}\times \mathrm{T}=\mathrm{b}$${\lambda }_{\mathrm{m}}=480\mathrm{nm}$$\mathrm{T}=\frac{b}{{\lambda }_{\mathrm{m}}}=\frac{2.88\times {10}^{-3}}{480\times {10}^{-9}}=6000\mathrm{K}$