Ray Optics and Optical Instruments

Related Questions

• The magnifying power of an astronomical telescope is 8 and the distance between the two lenses is 54 cm. The focal length of eye lens and objective lens will be respectively

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• A light ray from air is incident (as shown in figure) at one end of a glass fiber (refractive index $\mu = 1.5$) making an incidence angle of $60^o$ on the lateral surface, so that it undergoes a total internal reflection. How much time would it take to traverse the straight fiber of length 1 km

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• White light is incident on the interface of glass and air as shown in the figure. If green light is just totally internally reflected then the emerging ray in air contains

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• A thin glass (refractive index $1.5$) lens has optical power of $-\,5D$ in air. It's optical power in a liquid medium with refractive index 1.6 will be

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• Fraunhofer lines are obtained in

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