Ray Optics and Optical Instruments

Related Questions

• If the focal length of the objective lens is increased then

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• The length of the tube of a microscope is 10 cm. The focal lengths of the objective and eye lenses are 0.5 cm and 1.0 cm. The magnifying power of the microscope is about

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• A double convex lens of glass of $\mu = 1.5$ has radius of curvature of each of its surface is 0.2 m. The power of the lens is

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• A parallel beam of white light falls on a convex lens. Images of blue, yellow and red light are formed on other side of the lens at a distance of 0.20 m, 0.205 m and 0.214 m respectively. The dispersive power of the material of the lens will be

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• A virtual image three times the size of the object is obtained with a concave mirror of radius of curvature $36cm.$The distance of the object from the mirror is

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