Ray Optics and Optical Instruments

Related Questions

• A triangular prism of glass is shown in the figure. A ray incident normally to one face is totally reflected, if $\theta ={{45}^{o}}$. The index of refraction of glass is

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• The spectrum obtained from an electric lamp or red hot heater is

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• If the wavelength of light in vacuum be $\lambda$, the wavelength in a medium of refractive index $n$ will be

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• If the distance of the far point for a myopia patient is doubled, the focal length of the lens required to cure it will become

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• A ray of light is incident on the surface of separation of a medium at an angle 45° and is refracted in the medium at an angle 30°. What will be the velocity of light in the medium

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