- Some early telescope makers experimented with reflecting telescopes because
(F) refractors had not yet been invented.
(G) they did not need telescopes with great magnifying power.
(H) opticians had stopped working to build better refractors.
(J) early refractors produced distorted images.
(K) opticians had found a way to coat glass with silver.
- Opticians began using lenses made of several layers of glass in order to
(A) gather more incoming light.
(B) increase the size of their telescopes.
(C) construct stronger lenses that would not crack.
(D) avoid color distortion.
(E) focus light more sharply.
- Telescope makers probably want to construct larger telescopes in order to
(F) avoid the blurred images produced by small telescopes.
(G) be able to view a wider range of colors.
(H) enlarge the focused image for easier viewing.
(J) create a more polished metal surface.
(K) see farther into the universe.
