If a protostar were able to contract (get smaller)without any change to its surface temperature,what would happen to its luminosity?
A) It would decrease,due to the smaller surface area of the protostar.
B) It would remain the same because the temperature does not change.
C) It is not possible to predict the change in luminosity because other factors are involved.
D) It would increase due to the compression of the gas.

Question

Quizplus · Accepted Answer

Luminosity depends on both the surface area and the surface temperature of a star. If a protostar contracts without any change in surface temperature, its surface area decreases, leading to a decrease in luminosity.

If a Protostar Were Able to Contract (Get Smaller)without Any