Question

Experimental investigations show that the intensity of solar radiation is maximum for a wavelength $480nm$ in the visible region. Estimate the surface temperature of the sun. Given Wien's constant, $b=2.88\times {10}^{-3}mK$.

• A. 5000 K
• B. 6000 K
• C. 8000 K
• D. ${10}^{6}K$

Answer 1

The correct option is B

6000 K

According to Wien's law, ${\lambda }_{m}T=b$
$\therefore T=\frac{b}{{\lambda }_m}=\frac{2.88\times {10}^{-3}}{480\times {10}^{-9}}=6000K$
Hence, the correct choice is (b).