Refractive index is always a constant.

True

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False

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Solution

The correct option is B
False

Refractive index (n) isn't always a constant. When the wavelength of light increases, refractive index decreases and when wavelength decreases, refractive index increases. Likewise the speed of light varies with refractive index.

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Abs refractive index is always<or>then 1?

\frac{μ_{2}}{v} - \frac{μ_{1}}{u} = \frac{μ_{2} - μ_{1}}{R}

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