If the Sun were replaced by a white dwarf with a surface temperature of 10,000 K and a radius equal to Earth's, how would its luminosity compare to that of the Sun?
1. The luminosity from the white dwarf is nearly identical than that from the Sun.
2. The luminosity from the white dwarf is nearly 500 times lower than that from the Sun.
3. The luminosity from the white dwarf is nearly 1500 times lower than that from the Sun.
4. The luminosity from the white dwarf is nearly 1500 times higher than that from the Sun.
5. The luminosity from the white dwarf is nearly 500 times higher than that from the Sun,
