Ray Optics and Optical Instruments

Related Questions

• The unit of focal power of a lens is

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• To get three images of a single object, one should have two plane mirrors at an angle of

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• If two $+ 5 D$ lenses are mounted at some distance apart, the equivalent power will always be negative if the distance is

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• If ${{\mu }_{_{0}}}$ be the relative permeability and ${{K}_{0}}$ the dielectric constant of a medium, its refractive index is given by

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• A prism of refracting angle $60^o$ is made with a material of refractive index $\mu$. For a certain wavelength of light, the angle of minimum deviation is $30^o$. For this, wavelength the value of refractive index of the material is

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