Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.
Question 1: Refracting telescopes are based on _________ .
a) lenses
b) mirrors
Ans: lenses
Question 2: The biggest optical telescopes in the world are ___________ .
a) refractors
b) reflectors
Ans: reflectors
Question 3: Astronomers need big telescopes in order to _____________ .
a) magnify objects
b) collect more light
Ans: collect more light