Ray Optics and Optical Instruments

Related Questions

• A telescope has an objective lens of focal length 200 cm and an eye piece with focal length 2 cm. If this telescope is used to see a 50 meter tall building at a distance of 2 km, what is the height of the image of the building formed by the objective lens

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• In a parallel beam of white light is incident on a converging lens, the colour which is brought to focus nearest to the lens is

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• A plane mirror makes an angle of $30^\circ $ with horizontal. If a vertical ray strikes the mirror, find the angle between mirror and reflected ray

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• The mean distance of sun from the earth is $1.5\times {{10}^{8}}Km$ (nearly). The time taken by the light to reach earth from the sun is

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• The focal length of a concave mirror is f and the distance from the object to the principle focus is x. The ratio of the size of the image to the size of the object is

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