A white dwarf star has the same mass as the Sun but a radius 1/100 that of the Sun.How does the surface gravity of the white dwarf compare with that of the Sun?

Question

Quizplus · Accepted Answer

The surface gravity $g$ of an object is given by the formula $g = G\frac{M}{R^2}$, where $G$ is the gravitational constant, $M$ is the mass of the object, and $R$ is the radius of the object. Since the mass $M$ of the white dwarf is the same as that of the Sun, but its radius $R$ is 1/100th of the Sun's radius, the surface gravity of the white dwarf is $(100)^2 = 10,000$ times as large as that of the Sun.

A White Dwarf Star Has the Same Mass as the Sun