Ray Optics and Optical Instruments

Related Questions

• 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 cut diamond sparkles because of its

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• A thin plano-convex lens acts like a concave mirror of focal length 0.2 m when silvered from its plane surface. The refractive index of the material of the lens is 1.5. The radius of curvature of the convex surface of the lens will be

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• Under minimum deviation condition in a prism, if a ray is incident at an angle $30^o$, the angle between the emergent ray and the second refracting surface of the prism is

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• The Cauchy’s dispersion formula is

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