Question

Which type of telescope uses a convex lens as the eyepiece, since there is no necessity for an erect image?

Options

• Galilean telescope

• Binocular

• Terrestrial telescope

• Astronomical telescope

Answer 1

Astronomical telescopes are used to observe planets, stars, galaxies, and other distant heavenly bodies. In this case, there is no necessity for an erect image, so such telescopes use a convex lens as the eyepiece.