Stars on the Main Sequence Obey a Mass-Luminosity Relation

question 21

Multiple Choice

Stars on the main sequence obey a mass-luminosity relation. According to this relation,

• A) the lower the mass, the higher the luminosity
• B) if you double the mass, you get double the luminosity
• C) luminosity is proportional to mass to the fourth power (luminosity increases strongly with mass)
• D) bright stars have more mass around them in the form of planets, comets, and asteroids
• E) the brightest stars are made of such light materials they hardly have any mass at all
• Section 18.3: Diameters of Stars

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