Question

The refractive index of glycerine is 1.46. what is the spped of light in glycerine if the speed of light in air is 3*10

Answer 1

Divide speed of light by refractive index. :)

Answer 2

Given:
refractive index of glycerine = 1.46

speed of light in air= 3× 10^8 m/s

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

1. 46 = 3× 10^8/ speed of light in glycerine

Speed of light in glycerine= 3× 10^8/1.46

= 2.053 × 10 ^8 m/s

Hence, the Speed of light in glycerine= 2.053 × 10 ^8 m/s

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Hope this will help you....