Ray Optics and Optical Instruments

Related Questions

• A simple magnifying lens is used in such a way that an image is formed at 25 cm away from the eye. In order to have 10 times magnification, the focal length of the lens should be

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• Refractive index of glass is $\frac{3}{2}$ and refractive index of water is $\frac{4}{3}$. If the speed of light in glass is $2.00\times {{10}^{8}}$ m/s, the speed in water will be

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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 splitting of white light into several colours on passing through a glass prism is due to

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• When the power of eye lens increases, the defect of vision is produced. The defect is known as

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