Solar radiation is found to have an intensity maximum neat the wavelength range of 470 nm. Assuming the surface of sun to be perfectly absorbing (a = 1), calculate the temperature of solar surface.

6000 K

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8000 K

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1000 K

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16000 K

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Solution

The correct option is D $6000 K$
Since a = 1, sun can be assumed to be emitting as a black body from Wien's law for a black body.
$λ_{m} T = b$
$\Rightarrow T = \frac{b}{λ_{m}} = \frac{0.282 (c m - K)}{470 \times 10^{- 7} c m)}$
= 6000 K

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Solar radiation is found to have an intensity maximum neat the wavelength range of 470 nm. Assuming the surface of sun to be perfectly absorbing (a = 1), calculate the temperature of solar surface.

The correct option is D 6000KSince a = 1, sun can be assumed to be emitting as a black body from Wien's law for a black body.λmT=b⇒T=bλm=0.282(cm−K)470×10−7cm)= 6000 K

The correct option is D $6000 K$
Since a = 1, sun can be assumed to be emitting as a black body from Wien's law for a black body.
$λ_{m} T = b$
$\Rightarrow T = \frac{b}{λ_{m}} = \frac{0.282 (c m - K)}{470 \times 10^{- 7} c m)}$
= 6000 K