To give large magnification,a telescope should have
A)an objective with a long focal length and an eyepiece with a short focal length.
B)an objective with a short focal length and an eyepiece with a long focal length.
C)an objective with a long focal length and an eyepiece with a long focal length.
D)an objective with a short focal length and an eyepiece with a short focal length.

Question

Quizplus · Accepted Answer

The magnification of a telescope is given by the ratio of the focal length of the objective to the focal length of the eyepiece. A long focal length for the objective and a short focal length for the eyepiece will result in a large magnification.

To Give Large Magnification,a Telescope Should Have