A particular reflecting telescope has a primary mirror 0.4 m in diameter, 2.0 m focal length, and an eyepiece lens 1.0 cm in diameter and 0.5 cm focal length. What is the magnifying power of this telescope?

Question

Quizplus · Accepted Answer

The magnifying power of a telescope is given by the ratio of the focal length of the primary mirror (objective) to the focal length of the eyepiece. Here, it is $ \frac{2.0\,m}{0.5\,cm} = \frac{200\,cm}{0.5\,cm} = 400 \times $.

A Particular Reflecting Telescope Has a Primary Mirror 0