Stellar Luminosity Proportionality

00:00 1 marks

A star has a surface temperature $T$ and radius $R$. Its luminosity $L$ is proportional to:

A

$R T^2$
B

$R^2 T^2$
C

$R T^4$
D

$R^2 T^4$

Hint Hint

Hint

Recall the Stefan-Boltzmann law relating the power radiated per unit area to temperature. Consider the total surface area of the star.

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Answer Answer

Complete Answer

$R^2 T^4$

Mark Scheme Mark Scheme

Answer Explanation Answer Explanation

Examiner Tips Examiner Tips

Common Errors Common Errors

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