Ray Optics and Optical Instruments

Related Questions

• In the figure shown, for an angle of incidence ${{45}^{o}},$ at the top surface, what is the minimum refractive index needed for total internal reflection at vertical face

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• If convex lens of focal length $80cm$ and a concave lens of focal length $50 cm$ are combined together, what will be their resulting power

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• If $\hat{i}$ denotes a unit vector along incident light ray, $\hat{r}$ a unit vector along refracted ray into a medium of refractive index $\mu $ and $\hat{n}$ unit vector normal to boundary of medium directed towards incident medium, then law of refraction is

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• The astronomical telescope consists of objective and eye-piece. The focal length of the objective is

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• An astronaut in a spaceship see the outer space as

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