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Set the refractive index (n) for an unknown substance, the speed of light being 1.97 × 10⁸ m/s, note that c = 3 × 10⁸ m/s

options:
1.42
1.33
0.52
1.52​


Sagot :

Explanation:

n=c/v = (3 × 10⁸ m/s)/(1.97 × 10⁸ m/s) =1.52