Ray Optics and Optical Instruments

Related Questions

• An astronomical telescope has objective and eye-piece lens of powers 0.5 D and 20 D respectively, its magnifying power will be

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• The diameter of objective of a telescope is 1m. Its resolving limit for the light of wave length 4538 Å, will be

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• Two lenses have focal lengths ${{f}_{1}}$ and ${{f}_{2}}$ and their dispersive powers are ${{\omega }_{1}}$ and ${{\omega }_{2}}$ respectively. They will together form an achromatic combination if

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• When a ray of light emerges from a block of glass, the critical angle is

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• A convex lens produces a real image m times the size of the object. What will be the distance of the object from the lens

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