Ray Optics and Optical Instruments

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• For a compound microscope, the focal lengths of object lens and eye lens are ${{f}_{o}}$and ${{f}_{e}}$ respectively, then magnification will be done by microscope when

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• The diameter of the objective lens of a telescope is 5.0 m and wavelength of light is 6000 Å. The limit of resolution of this telescope will be

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