Ray Optics and Optical Instruments

Related Questions

• An object is at a distance of 0.5 m in front of a plane mirror. Distance between the object and image is

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• A point source of light is placed 4 m below the surface of water of refractive index 5 / 3. The minimum diameter of a disc which should be placed over the source on the surface of water to cut–off all light coming out of water is

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• When light enters from air to water, then its

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• An under water swimmer is at a depth of 12 m below the surface of water. A bird is at a height of 18 m from the surface of water, directly above his eyes. For the swimmer the bird appears to be at a distance from the surface of water equal to (Refractive Index of water is 4/3)

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• Critical angle of light passing from glass to air is minimum for

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