A star's apparent magnitude is most closely related to which of the following? Select all that apply.
a. radius.
b. luminosity.
c. distance from Earth.
d. absolute magnitude. E. surface temperature.
The apparent magnitude is a measure of the star's apparent luminosity, the apparent luminosity is directly related to the star's apparent magnitude.
The star's luminosity is the measure of the star's brightness and this diminishes with distance, the luminosity of a star also depends on the size of the star, this means that a star's magnitude and luminosity are directly related.
