Ray Optics and Optical Instruments

Related Questions

• A concave mirror of focal length 15 cm forms an image having twice the linear dimensions of the object. The position of the object when the image is virtual will be

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• 'Mirage' is a phenomenon due to

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• Figure given below shows a beam of light converging at point P. When a convex lens of focal length 16 cm is introduced in the path of the beam at a place O shown by dotted line such that OP becomes the axis of the lens, the beam converges at a distance x from the lens. The value x will be equal to

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• Velocity of light in a medium is $1.5\times {{10}^{8}}m/s.$ Its refractive index will be

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• A lens (focal length 50 cm) forms the image of a distant object which subtends an angle of 1 milliradian at the lens. What is the size of the image

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