Question

Which factor does not affect the apparent brightness of a star?


how hot the star is
how big the star is
how far away the star is
how old the star is

Answer 1

@Goku-Kai

Answer 2

B

Answer 3

How old the star is! ;D

Answer 4

According to physics, speaking of our vision, seeing an object far away in a relatively empty space, you can clearly identify the object by its unique brightness.
Furthermore, heat energy expended at very high levels can promote rise in light energy.
Adding on to that, the larger the size of an object , the more identifiable it is.
Age does not necessarily depends on brightness.
Therefore, answer is D.

Answer 5

That deserves a medal haha

Answer 6

Thanks.