Ray Optics and Optical Instruments

Related Questions

• The radius of curvature of convex surface of a thin plano-convex lens is $15 cm$ and refractive index of its material is $1.6$. The power of the lens will be

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• A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is $\frac{4}{3}$ and the fish is $12 cm$ below the surface, the radius of this circle in cm is

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• A ray is reflected in turn by three plain mirrors mutually at right angles to each other. The angle between the incident and the reflected rays is

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• In a thin prism of glass (refractive index 1.5), which of the following relations between the angle of minimum deviations ${{\delta }_{m}}$ and angle of refraction $r$ will be correct

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• When light emitted by a white hot solid is passed through a sodium flame, the spectrum of the emergent light will show

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