Ray Optics and Optical Instruments

Related Questions

• Two thin lenses, one of focal length + 60 cm and the other of focal length – 20 cm are put in contact. The combined focal length is

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• When a white light passes through a hollow prism, then

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• A thin prism ${{P}_{1}}$ with angle 6° and made from glass of refractive index 1.54 is combined with another thin prism P2 of refractive index 1.72 to produce dispersion without deviation. The angle of prism ${{P}_{2}}$ will be

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• An achromatic prism is made by combining two prisms ${{P}_{1}}({{\mu }_{v}}=1.523,\,{{\mu }_{r}}=1.515)$ and ${{P}_{2}}({{\mu }_{v}}=1.666,\,{{\mu }_{r}}=1.650)$; where $\mu $ represents the refractive index. If the angle of the prism ${{P}_{1}}$ is 10°, then the angle of the prism $P_2$ will be

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• An object of size $7.5cm$ is placed in front of a convex mirror of radius of curvature $25cm$ at a distance of $40cm.$The size of the image should be

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