The objective lens of a telescope has a focal length of 2.0 m and its eyepiece has a focal length of 1.0 cm.What is the magnification of this telescope when viewing Jupiter?
A)0.0050
B)0.50
C)2.0
D)20
E)200

Question

Quizplus · Accepted Answer

The magnification of a telescope is given by the ratio of the focal length of the objective lens to the focal length of the eyepiece. Therefore, magnification = focal length of objective / focal length of eyepiece = 2.0 m / 1.0 cm = 200 cm / 1 cm = 200.

The Objective Lens of a Telescope Has a Focal Length