The primary mirrors of most radio telescopes is similar to the primary mirror of a reflecting optical telescope in that
A)they are both concave in shape.
B)they are both convex in shape.
C)they are typically the same size.
D)they are both made of metal.
E)they have nothing in common.

Question

Quizplus · Accepted Answer

The primary mirrors of both radio telescopes and optical telescopes are concave in shape to focus incoming waves or light to a point.

The Primary Mirrors of Most Radio Telescopes Is Similar to the Primary