How is the primary of most radio telescopes similar to the primary of a reflecting optical telescope?
A) They both focus electromagnetic radiation.
B) They both use glass to bend the path of light rays.
C) They are typically the same size.
D) They are both made of metal.

Question

Quizplus · Accepted Answer

The primary of most radio telescopes and the primary of reflecting optical telescopes both focus electromagnetic radiation, albeit at different wavelengths. Radio telescopes focus radio waves, while reflecting optical telescopes focus visible light.

How Is the Primary of Most Radio Telescopes Similar to the Primary