Ray Optics and Optical Instruments

Related Questions

• What is the time taken (in seconds) to cross a glass of thickness $4 mm$ and $\mu $= 3 by light

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• A light wave has a frequency of $4 imes {{10}^{14}}$Hz and a wavelength of $5\times {{10}^{-7}}$ meters in a medium. The refractive index of the medium is

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• Two vertical plane mirrors are inclined at an angle of $60^\circ $ with each other. A ray of light travelling horizontally is reflected first from one mirror and then from the other. The resultant deviation is

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• A planet is observed by an astronomical refracting telescope having an objective of focal length 16 m and an eye-piece of focal length 2 cm

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• The minimum temperature of a body at which it emits light is

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