Ray Optics and Optical Instruments

Related Questions

• The refractive index of flint glass for blue F line is 1.6333 and red C line is 1.6161. If the refractive index for yellow D line is 1.622, the dispersive power of the glass is

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• A magnifying glass is to be used at the fixed object distance of 1 inch. If it is to produce an erect image magnified 5 times its focal length should be

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• The length of the optical path of two media in contact of length ${{d}_{1}}$ and ${{d}_{2}}$ of refractive indices $$${{\mu }_{1}}$ and ${{\mu }_{2}}$ respectively, is

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• An equiconvex lens of glass of focal length $0.1$ metre is cut along a plane perpendicular to principle axis into two equal parts. The ratio of focal length of new lenses formed is

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• A convex lens of focal length 84 cm is in contact with a concave lens of focal length 12 cm. The power of combination (in diopters) is

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