Question:
The surface temperature of the Sun which has maximum energy emission at $500 \,nm$ is $6000 \,K$. The temperature of a star which has maximum energy emission at $400\, nm$ will be
The surface temperature of the Sun which has maximum energy emission at $500 \,nm$ is $6000 \,K$. The temperature of a star which has maximum energy emission at $400\, nm$ will be
Updated On: Aug 15, 2022
- 6500 K
- 7500 K
- 4500 K
- 8500 K
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The Correct Option is B
Solution and Explanation
By using Wien�s displacement law,
$\left(\lambda_{m}\right)_{1} T_{1} = \left(\lambda_{m}\right)_{2} T_{2} $
$ \Rightarrow 500 \times6000 =400 \times T_{2} $
$\Rightarrow T_{2} = \frac{500 \times6000}{400} $
$ T_{2} = 7500 \,K$
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