Ray Optics and Optical Instruments

Related Questions

• An achromatic combination of lenses produces

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• A magnifying glass is to be used at the fixed object distance of 1 inch. If it is to produce an erect image magnified 5 times its focal length should be

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• A biconvex lens with equal radii curvature has refractive index 1.6 and focal length 10 cm. Its radius of curvature will be

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• A boy stands straight infront of a mirror at a distance of $30cm$ away from it. He sees his erect image whose height is $\frac{1}{5}th$of his real height. The mirror he is using is

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• The minimum distance between the object and its real image for concave mirror is

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