# Through experiment, the speed of light passing through material A is 1.4 times greater than when the same light passes through material B. What is the ratio of the refractive index of material A to that of material B?

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Through experiment, the speed of light passing through material A is 1.4 times greater than when the same light passes through material B. What is the ratio of the refractive index of material A to that of material B?

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Step 1

Refractive index of a material is defined as the ratio of speed of light in vacuum to the speed of light in the medium. equation (I) represents the expression for refractive index.

Step 2

let  vA   be the speed of light in medium A, and vB be the speed of light in medium B. The speed of light in medium A is 1.4 times the speed of light in medium B.

Step 3

Take the ratio of refractive index of medium A and B, and su...

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### Physics 