Ray Optics and Optical Instruments

Related Questions

• The minimum distance between an object and its real image formed by a convex lens is

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• Immiscible transparent liquids A, B, C, D and E are placed in a rectangular container of glass with the liquids making layers according to their densities. The refractive index of the liquids are shown in the adjoining diagram. The container is illuminated from the side and a small piece of glass having refractive index 1.61 is gently dropped into the liquid layer. The glass piece as it descends downwards will not be visible in

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• Finger prints on a piece of paper may be detected by sprinkling fluorescent powder on the paper and then looking it into

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• If the central portion of a convex lens is wrapped in black paper as shown in the figure

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• Focal length of a convex lens will be maximum for

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