Question

which of the following absolute refractive index values is not possible √2,√3,√2+1,√2-1​

Answer 1

√2-1= 1.14 - 1= 0.14(approx)

This is because of the fact that refractive index cannot be less than 1, if it is then it would mean that the speed of light is faster in this medium than the speed of light in vacuum, which is certainly impossible.

Answer 2

√2-2 is the correct answer

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