Question

explain the construction of galileo's telescope

Answer 1

A Galilean telescope is defined as having one convex lens and one concave lens. The concave lens serves as the ocular lens, or the eyepiece, while the convex lens serves as the objective. ... Actually, Galileo could notexplain how his telescope magnified precisely.

Answer 2

The Galilean telescope consists of a converging lens (plano-convex or biconvex) serving as objective, and a diverging lens (plano-concave or biconcave) serving as eyepiece. The eyepiece is situated in front of the focal point of the objective, at a distance from the focal point equal to the focal length of the eyepiece.
HOPE THIS HELPED U