Question
A telescope has an objective with a refractive power of 1.25 diopters and an eyepiece with a refractive power of 250 diopters. What is the angular magnification of the telescope?
Step 1
The focal length (f) is the inverse of the refractive power (P), so: f_objective = 1 / P_objective = 1 / 1.25 diopters = 0.8 meters f_eyepiece = 1 / P_eyepiece = 1 / 250 diopters = 0.004 meters Show more…
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