![]() ![]() ![]() ![]() The absolute refractive index has one material medium and one vacuum in which the speed of light is 3 × 10 8 m/s. The type of refractive index depends upon the two mediums in which the light is travelling. The ratio of the velocities or speed of light in different media gives the refractive index. Whenever the light that tends to travel obliquely from one medium to another changes its direction while travelling from another, the extent of change in the direction of light rays is what we say and calculate as refractive index. The refractive index gives an idea about the speed of light while travelling in a different medium. The index of refraction or in other words refractive index enables us to know how fast light travels through the material medium. Refractive Index first of all is a dimensionless quantity. Role of Mahatma Gandhi in Freedom StruggleĬonstant value depends upon the refractive indexes of the two taken mediums. ![]()
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