Ray Optics and Optical Instruments

Related Questions

• A convex lens is in contact with concave lens. The magnitude of the ratio of their focal length is 2/3. Their equivalent focal length is 30 cm. What are their individual focal lengths

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• Least distance of distinct vision is 25 cm. Magnifying power of simple microscope of focal length 5 cm is

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• Two lenses of power $6D$ and $– 2D$ are combined to form a single lens. The focal length of this lens will be

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• The refractive index of water with respect to air is $4 / 3$ and the refractive index of glass with respect to air is $3/2$. The refractive index of water with respect to glass is

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• A ray of light travelling in a transparent medium falls on a surface separating the medium from air at an angle of incidence of 45°. The ray undergoes total internal reflection. If n is the refractive index of the medium with respect to air, select the possible value (s) of n from the following

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