Explanation: Refractive index can be defined as the strength of the material which bends the light ray , when passed through material.
Mathematically, It is represented by the ratio of velocity of light ray in vacuum to the velocity of light ray in medium
Final Answer:
Refractive index can be defined as the strength of the material which bends the light ray , when passed through material.
Mathematically, It is represented by the ratio of velocity of light ray in vacuum to the velocity of light ray in medium