Ray Optics and Optical Instruments

Related Questions

• A biconvex lens forms a real image of an object placed perpendicular to its principal axis. Suppose the radii of curvature of the lens tend to infinity. Then the image would

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• If ${{I}_{1}}$ and ${{I}_{2}}$ be the size of the images respectively for the two positions of lens in the displacement method, then the size of the object is given by

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• Two lenses have focal lengths ${{f}_{1}}$ and ${{f}_{2}}$ and their dispersive powers are ${{\omega }_{1}}$ and ${{\omega }_{2}}$ respectively. They will together form an achromatic combination if

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• If the refractive index of a material of equilateral prism is $\sqrt{3}$, then angle of minimum deviation of the prism is

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• The minimum temperature of a body at which it emits light is

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