Question

which two terms are related to the word radius in terms of discussing black holes?
light - year and solar mass
supernova and solar - mass
schwarzschild and au
charl and ellipsoid

Explanation:

The Schwarzschild radius is a well - known concept related to black holes, which defines the radius of the event horizon for a non - rotating black hole. An astronomical unit (AU) is a unit of length used in astronomy but not directly related to black hole radius in the context of the question. Light - year is a unit of distance, solar mass is a unit of mass, supernova is an astronomical event, dwarf and elliptical are types of galaxies. None of the other options have terms directly related to black hole radius concepts like Schwarzschild radius.

Answer:

C. Schwarzschild and AU (though AU is not as directly related as Schwarzschild radius in the context of black hole radius definitions)