How is the refractive index of a material related to the speed of ligh – McqOptions

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1.	How is the refractive index of a material related to the speed of light in air?
A.	Refractive index = Speed of light in air x Speed of light in material
B.	Refractive index = Speed of light in material/ Speed of light in air
C.	Refractive index = Speed of light in air/Speed of light in material
D.	Refractive index = Speed of light in air +Speed of light in material
Answer» D. Refractive index = Speed of light in air +Speed of light in material

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