You observe a red star and a blue star of the same brightnes

You observe a red star and a blue star of the same brightness, what can you conclude about the relative luminosities of the red star compared to the blue star?

A. The red star is more luminous than the blue star

B. There is not enough information to answer the question

C. The blue star is more luminous than the red star

D. The red star and the blue star have the same luminosities

Solution

The red star is more luminous than the blue star