Ray Optics and Optical Instruments

Related Questions

• The light ray is incidence at angle of 60° on a prism of angle 45°. When the light ray falls on the other surface at 90°, the refractive index of the material of prism $\mu $ and the angle of deviation $\delta $ are given by

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• If the refractive indices of crown glass for red, yellow and violet colours are respectively ${{\mu }_{r\,}},\,\,{{\mu }_{y}}$ and ${{\mu }_{v}}$, then the dispersive power of this glass would be

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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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• The number of wavelengths in the visible spectrum

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• A vessel of depth 2d cm is half filled with a liquid of refractive index ${{\mu }_{1}}$ and the upper half with a liquid of refractive index ${{\mu }_{2}}$. The apparent depth of the vessel seen perpendicularly is

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