Question

Question #e192b

Answer 1

C) Difference of apparent magnitudes are equal to the difference of absolute magnitude.

Explanation:

We can eliminate answer A, because being the same distance does not force the two stars to appear to have the same magnitude.

We can eliminate answer B, because being the same distance does not force the two stars to have the same magnitude.

Answer C is true, because the apparent magnitude depends on the distance and the absolute magnitude and, therefore, the difference in between the apparent magnitudes of two stars at the same distance with be the same as the difference between their absolute magnitudes.

We can eliminate answer D, because angular diameter depends on actual diameter and being the same distance does not force the two stars to be the same actual diameter.

Because answer C is true, answer E cannot be true.