Ray Optics and Optical Instruments

Related Questions

• Refractive index of glass is $\frac{3}{2}$ and refractive index of water is $\frac{4}{3}$. If the speed of light in glass is $2.00\times {{10}^{8}}$ m/s, the speed in water will be

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• A parallel beam of white light falls on a convex lens. Images of blue, yellow and red light are formed on other side of the lens at a distance of 0.20 m, 0.205 m and 0.214 m respectively. The dispersive power of the material of the lens will be

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• If tube length of astronomical telescope is 105 cm and magnifying power is 20 for normal setting, calculate the focal length of objective

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• In a simple microscope, if the final image is located at infinity then its magnifying power is

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• If ${{\varepsilon }_{0}}$ and ${{\mu }_{0}}$ are respectively, the electric permittivity and the magnetic permeability of free space, $\varepsilon $ and $\mu $ the corresponding quantities in a medium, the refractive index of the medium is

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