Ray Optics and Optical Instruments

Related Questions

• A convex lens has a focal length $f$. It is cut into two parts along the dotted line as shown in the figure. The focal length of each part will be

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• The refractive index of water is 1.33. What will be the speed of light in water

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• The critical angle for diamond (refractive index = 2) is

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• A normally incident ray reflected at an angle of ${{90}^{o}}$. The value of critical angle is

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• The focal length of objective and eye lens of a astronomical telescope are respectively 2 m and 5 cm. Final image is formed at (i) least distance of distinct vision (ii) infinity. The magnifying power in both cases will be

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