Science, asked by kainayaleharu, 9 months ago

optician has prescribed corrective lens indicating -0.4D . This means the lens prescribed is convex

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Answered by swan030782

Answer:

A convex lens of short focal length bends the light rays through large angles, by focussing them closer to the optical centre. ... Optician prescribes corrective lenses indicating their powers. Let us say the lens prescribed has power equal to + 4.0 D. This means the lens prescribed is convex.

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