Question

If the velocity of light in vacuum is 3 × 10^8 ms^-1 and in another medium M is 0.75 * 10^8 ms^-1, what is the refractive index of M?
Pls answer fast, those who answer first and correct will be marked brainliest

Answer 1

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refractive index of medium is(3 * 10^ 8) by ( 0.75 * 10^ 8)= 4