Question

Which is the kind of lens used in Galilean telescope

Answer 1

It used a convergent (plano-convex) objective lens and a divergent (plano-concave) eyepiece lens (Galileo, 1610). A Galilean telescope, because the design has no intermediary focus, results in a non-inverted and uprightimage. Galileo's best telescope magnified objects about 30 times.