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Q109. What is the focal length of a telescope's eyepiece if the objective lens has a focal length of 40 cm and the magnification is 4?

Physics — NUST Mock By Dogers 3 — Question 109 of 200

A. 10 cm
B. 20 cm
C. 30 cm
D. 40 cm

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What is the focal length of a telescope's eyepiece if t... | Physics MCQ #109 | Examora | Examora