Question

Suppose a star that is 500 light- years away from earth is moved to be 600 light - years away. Which statement is correct?

A. the value of the star's absolute magnitude decreases.
B. the value of the star's absolute magnitude increases.
C. the value of the star's apparent magnitude decreases.
D. the value of the star's apparent magnitude increases.

Answer 1

i think the correct statement would be: D. the value of the star's apparent magnitude increases.
Apparent value refers to the value that which we could directly see/measure, such as distance, speed, size, color, etc. Light-years away could be used as a measurement of distance and speed at the same time.