Ray Optics and Optical Instruments

Related Questions

• Focal length of a converging lens in air is R. If it is dipped in water of refractive index 1.33, then its focal length will be around (Refractive index of lens material is 1.5)

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• Two thin lenses, one of focal length + 60 cm and the other of focal length – 20 cm are put in contact. The combined focal length is

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• What should be the angle between two plane mirrors so that whatever be the angle of incidence, the incident ray and the reflected ray from the two mirrors be parallel to each other

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• Finger prints on a piece of paper may be detected by sprinkling fluorescent powder on the paper and then looking it into

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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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