Ray Optics and Optical Instruments

Related Questions

• For observing a cricket match, a binocular is preferred to a terrestrial telescope because

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• The wavelength of sodium light in air is 5890 Å. The velocity of light in air is $3\times {{10}^{8}}m{{s}^{-1}}.$ The wavelength of light in a glass of refractive index 1.6 would be close to

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• Myopia is due to

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• The minimum magnifying power of a telescope is M, If the focal length of its eye lens is halved, the magnifying power will become

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• A ray of light propagates from glass (refractive index = 3/2) to water (refractive index = 4/3). The value of the critical angle

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