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State Snell's law of refraction of light.
The colour of light for which the refractive index of glass is minimum, is :
Absolute refractive index of glass and water is 3/2 and 4/3 respectively. If the speed of light in glass is 2 × 10⁸ m/s, the speed of light in water is :
State laws of refraction of light.
The speed of light in vacuum is 3 × 10⁸ m/s. If the speed of light in a medium is 2.25 × 10⁸ m/s, the absolute refractive index of the medium is :
State two laws of refraction of light.
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