Ray Optics and Optical Instruments

Related Questions

• The velocity of light in a medium is half its velocity in air. If ray of light emerges from such a medium into air, the angle of incidence, at which it will be totally internally reflected, is

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• The focal length of objective and eye lens of a microscope are 4 cm and 8 cm respectively. If the least distance of distinct vision is 24 cm and object distance is 4.5 cm from the objective lens, then the magnifying power of the microscope will be

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• A divergent lens will produce

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• A man having height 6 m. He observes image of 2 m height erect, then mirror used is

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• Stars are not visible in the day time because

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