Ray Optics and Optical Instruments

Related Questions

• The radius of curvature for a convex lens is $40 cm$, for each surface. Its refractive index is $1.5$. The focal length will be

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• A man is $180cm$ tall and his eyes are $$ below the top of his head. In order to see his entire height right from toe to head, he uses a plane mirror kept at a distance of $1m$ from him. The minimum length of the plane mirror required is

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• Total internal reflection of light is possible when light enters from

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• The radius of the convex surface of plano-convex lens is 20 cm and the refractive index of the material of the lens is 1.5. The focal length of the lens is

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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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