Question

For stars on the main sequence, luminosity (expressed in units of the Sun’s luminosity,L⊙) varies as the fourth power of the mass.

A) True

B) False

Answer 1

For stars on the main sequence, luminosity varies as the fourth power of the mass.

Step-by-step explanation:

For stars on the main sequence, luminosity (expressed in units of the Sun's luminosity, L⊙) varies as the fourth power of the mass. This means that if two stars differ in mass by a factor of 2, the more massive one will be about 16 times brighter. Conversely, if one star is 1/3 the mass of another, it will be approximately 81 times less luminous. So, the statement is True.