Generally Speaking,how Does the Surface Temperature and Luminosity of a Protostar

question 93

Multiple Choice

Generally speaking,how does the surface temperature and luminosity of a protostar compare to the surface temperature and luminosity of the main-sequence star it becomes?

• A)A main-sequence star is hotter and brighter than it was as a protostar.
• B)A main-sequence star is cooler and dimmer than it was as a protostar.
• C)A main-sequence star is cooler and brighter than it was as a protostar.
• D)A main-sequence star is hotter and dimmer than it was as a protostar.

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