Wave OpticsHard
Question
A telescope has an objective lens of focal length 200 cm and an eye piece with focal length 2cm. If this telescope is used to see a 50 meter tall of the image of the building at a distance of 2km, what is the height of the image of the building formed by the objective lens?
Options
A.5 cm
B.10 cm
C.1 cm
D.2 cm
Solution
u = - 200m, v = ?, f = 200 cm = 2m
Size of image =
× 50 × 100 cm ≈ 5 cm
Size of image =
× 50 × 100 cm ≈ 5 cmCreate a free account to view solution
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