Ray Optics and Optical Instruments

Related Questions

• If the refractive indices of crown glass for red, yellow and violet colours are 1.5140, 1.5170 and 1.5318 respectively and for flint glass these are 1.6434, 1.6499 and 1.6852 respectively, then the dispersive powers for crown and flint glass are respectively

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• Fraunhofer spectrum is a

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• The diameter of the objective of a telescope is $a$, its magnifying power is $m$ and wavelength of light is $\lambda .$The resolving power of the telescope is

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• If the angle of prism is ${{60}^{o}}$ and the angle of minimum deviation is ${{40}^{o}}$, the angle of refraction will be

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• 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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