Question
A giant refracting telescope at an observatory has an objective lens of focal length 15 m. If an eyepiece of focal length 1.0 cm is used, what is the angular magnification of telescope?
Solution
Given,
Focal length of objective lens, fo = 15 m
Focal length of eyepiece, fe = 1.0 cm = 10–2 m
Therefore,
Angular magnification =
Focal length of objective lens, fo = 15 m
Focal length of eyepiece, fe = 1.0 cm = 10–2 m
Therefore,
Angular magnification =
