A refracting telescope has an objective lens of focal length 40 cm and a diameter of 10 cm,and an eyepiece of focal length 5 cm and diameter 1 cm.What is the magnifying power of this telescope?
A) 10 times
B) 40 times
C) 2 times
D) 8 times

Question

Quizplus · Accepted Answer

The magnifying power of a refracting telescope is given by the formula: Magnifying Power = Focal Length of Objective Lens / Focal Length of Eyepiece. Here, it is 40 cm / 5 cm = 8 times.

A Refracting Telescope Has an Objective Lens of Focal Length