Ray Optics and Optical Instruments

Related Questions

• Large aperture of telescope are used for

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• A plane convex lens is made of refractive index 1.6. The radius of curvature of the curved surface is 60 cm. The focal length of the lens is

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• In a laboratory four convex lenses ${{L}_{1}},\,{{L}_{2}},\,{{L}_{3}}$ and ${{L}_{4}}$ of focal lengths 2, 4, 6 and 8 cm respectively are available. Two of these lenses form a telescope of length 10 cm and magnifying power 4. The objective and eye lenses are

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• White light is passed through a prism ........... colour shows minimum deviation

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• A ray of light is incident normally on one of the face of a prism of angle $30^o$ and refractive index $\sqrt{2}$. The angle of deviation will be

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