Ray Optics and Optical Instruments

Related Questions

• A Galileo telescope has an objective of focal length $100cm$ and magnifying power $50$. The distance between the two lenses in normal adjustment will be

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• The focal lengths of convex lens for red and blue light are 100 cm and 96.8 cm respectively. The dispersive power of material of lens is

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• A ray of light is incident on a transparent glass slab of refractive index 1.62. The reflected and the refracted rays are mutually perpendicular. The angle of incidence is

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• If the central portion of a convex lens is wrapped in black paper as shown in the figure

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• Fraunhofer lines are produced by

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