When an astronomical telescope is in normal adj... - WAEC Physics 1992 Question
When an astronomical telescope is in normal adjustment, the focal length of the objective lens is 50cm and that of the eyepiece is 2.5om. What is the distance between the lenses?
A
20.0cm
B
47.5cm
C
50.0cm
D
52.5cm
correct option: d
Distance between lens = f0 + fe = 52.5cm
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