Ray Optics and Optical Instruments

Related Questions

• The refractive index of the material of the prism for violet colour is 1.69 and that for red is 1.65. If the refractive index for mean colour is 1.66, the dispersive power of the material of the prism

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• The figures represent three cases of a ray passing through a prism of angle A. The case corresponding to minimum deviation is

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• A simple telescope, consisting of an objective of focal length $60 cm$ and a single eye lens of focal length $5 cm$ is focussed on a distant object is such a way that parallel rays comes out from the eye lens. If the object subtends an angle $2^o$ at the objective, the angular width of the image

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• 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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• An endoscope is employed by a physician to view the internal parts of a body organ. It is based on the principle of

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