If a glass lens has a focal length (f) of 0.5 meters, what is its power (P)? - OPTICS Quiz | GKFix.in

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Question

If a glass lens has a focal length (f) of 0.5 meters, what is its power (P)?

A. 0.5 Dioptres (D)
B. 1.0 Dioptre (D)
C. 2.0 Dioptres (D)
D. 5.0 Dioptres (D)

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