Ray Optics and Optical Instruments

Related Questions

• 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 plane mirror reflects a pencil of light to form a real image. Then the pencil of light incident on the mirror is

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• Four convergent lenses have focal lengths 100 cm, 10 cm, 4 cm and 0.3 cm. For a telescope with maximum possible magnification, we choose the lenses of focal length

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• A man can see clearly up to 3 metres. Prescribe a lens for his spectacles so that he can see clearly up to 12 metres

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• To produce magnified erect image of a far object, we will be required along with a convex lens, is

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