If the focal length of the mirror is 1000-mm and the focal length of the eyepiece is 50-mm, then what is the magnification?
Question
If the focal length of the mirror is 1000-mm and the focal length of the eyepiece is 50-mm, then what is the magnification?
Solution
The magnification of a telescope is calculated by dividing the focal length of the mirror (also known as the objective) by the focal length of the eyepiece.
Given: Focal length of the mirror = 1000 mm Focal length of the eyepiece = 50 mm
So, the magnification (M) can be calculated as follows:
M = Focal length of the mirror / Focal length of the eyepiece M = 1000 mm / 50 mm M = 20
Therefore, the magnification of the telescope is 20.
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