Which of the following types of stars are dim but can have high surface temperatures? Giants Main sequence stars Supergiants Dwarfs

Dwarf stars.

Explanation:

Dwarf star is the small size of star and most of the main sequence stars are included in dwarf stars. Dwarf star was coined by Ejnar Hertzsprung.

Dwarf star has low luminosity and appears dim. These stars have high surface temperature and looks fainter than the sun. Different types of dwarf stars are red dwarf, yellow dwarf and orange dwarf.

Thus, the correct answer is option (4).

The white dwarf star are formed during the final stage of the star evolution and are found in the bottom left side of the HR diagram. These star posses high temperature but have low luminosity due to their small size.