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A crossed lens is used to minimize spherical aberration. The ratio of the radii of curvatures is ($\\mu =1.5$)a) 1\/6b) -1\/6c) 6d)-6
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A crossed lens is used to minimize spherical aberration. The ratio of the radii of curvatures is ($\\mu =1.5$)a) 1\/6b) -1\/6c) 6d)-6
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