Geometrical OpticsMedium
Question
An astronomical telescope of magnifying power 8 is made using two lenses spaced 45 cm apart. The focal length of the lenses used are
Options
A.F = 40 cm, f = 5 cm
B.F = 8 cm, f = 5 cm
C.F = 5 cm, f = 47 cm
D.F = 20 cm, f = 5 cm
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