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MHT CET Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET

A symmetric double convex lens is cut in two equal parts by a plane perpendicular to the principal axis. If the power of the original lens is D, then the power of a cut lens will be

Answer: (A)

Solution

Cutting perpendicular to the axis gives two plano-convex lenses, each with only one curved surface, so

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Question ID VK-069389