If a star is twice as hot as the sun and only half the sun's diameter, it will be less luminous than the sun.

Name: If a star is twice as hot as the sun and only half the sun's diameter, it will be less luminous than the sun.
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Question

Quizplus · Accepted Answer

Luminosity of a star is directly proportional to the fourth power of its surface temperature and the square of its radius. The given star has a higher temperature but smaller radius than the sun, which means its luminosity would be lower than that of the sun.

If a Star Is Twice as Hot as the Sun