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Choose the correct answer:
The formula for refractive index is:

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a

$n = \frac{c}{v}$

b

$\frac{1}{f} = \frac{1}{v} + \frac{1}{u}$

c

None of the above

d

$m = - v u$

answer is A.

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Detailed Solution

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Refractive index has no dimensions. It is a measurement of how much slower a light wave would move through a substance than it would in a vacuum. The refractive index, denoted by the symbol n, is calculated by dividing the speed of light in a medium by the speed of light in vacuum.

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