What happens when a light ray incident normally on the surface of a glass slab enters from air into the glass?
- AThe angle of refraction is greater than the angle of incidence.
- BThe angle of refraction is smaller than the angle of incidence.
- CIt passes in the same direction without refraction.
- DIt undergoes total internal reflection.
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You are given kerosene,turpentine,and water. In which of these does the light travel fastest? Use the information given in the table below.
Material medium Refractive index Water $1.33$ Kerosene $1.44$ Turpentine oil $1.47$
| Material medium | Refractive index |
| Water | $1.33$ |
| Kerosene | $1.44$ |
| Turpentine oil | $1.47$ |
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View SolutionIn which medium is the speed of light the highest?
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View SolutionWhy does a light ray incident on a rectangular glass slab immersed in any medium emerge parallel to itself? Explain.
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View SolutionAs the velocity of light increases,the refractive index of the medium decreases. Light enters from air to water having a refractive index of $4/3$. Find the speed of light in water. The speed of light in vacuum is $3 \times 10^{8} \text{ m s}^{-1}$.
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View SolutionWhat changes; frequency or wavelength, when light passes from a rarer to a denser medium?
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