Question

The refractive index of glycerin is 1.46. what is speed of light in air if it's speed in glycerin is 2.05 X 108 ms?​

Answer 1

The refractive index of glycerine = 1.46.

the speed of light in glycerine is 2.05 into 10 to the power 8 metre per second .

Refractive index= Speed of light in air /Speed of light in glycerine

1.46= speed of light in air /2.05x10^8m/s

speed of light in air = 1.46× 2.05×10^8m/s

= 2.99×10^8m/s

its nearly equal to =3x10^8 m/s

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