If two stars are emitting the same amount of light and are the same size, the star that is farther will appear
A)brighter.
B)dimmer.
C)redder.
D)bluer.
E)They will have the same brightness as seen from Earth.

Question

Quizplus · Accepted Answer

This is because of the inverse square law of light. The intensity of light decreases as the distance from the source increases, and it decreases by the square of the distance. Hence, the farther star will appear dimmer compared to the closer one.

If Two Stars Are Emitting the Same Amount of Light