Ray Optics and Optical Instruments

Related Questions

• The separation between two microscopic particles is measured ${{P}_{A}}$ and ${{P}_{B}}$ by two different lights of wavelength 2000 Å and 3000 Å respectively, then

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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 magnifying power of an astronomical telescope for relaxed vision is 16. On adjusting, the distance between the objective and eye lens is 34 cm. Then the focal length of objective and eye lens will be respectively

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• The focal length of the objective and eye piece of a telescope are respectively 60 cm and 10 cm. The magnitude of the magnifying power when the image is formed at infinity is

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• Velocity of light in a medium is $1.5\times {{10}^{8}}m/s.$ Its refractive index will be

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