#### Question

The refractive index of glass for light going from air to glass is The refractive index for light going from glass to air will be:

(*a*) `1/3`

(*b*) `4/5`

(*c*) `4/6`

(*d*) `5/2`

#### Solution

4/6

Explanation:

Refractive index of material 2 with respect to material 1 is given by:

_{1}n_{2 =`"speed of light in medium 1"/"speed of light in medium 2"` }

_{By the same argument, refractive index of medium 1 with respect to medium 2 is given by: }

_{2n1 = `"speed of light in medium 2"/"speed of lighht in medium 1"`=1/1n2 }

_{1n2 is `3/2` therefore, 2n1 will be 1/ `3/2` }

_{Therefore, refractive index of light going from glass to air will be 4/6.}

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The Refractive Index of Glass for Light Going from Air to Glass Is 3232. the Refractive Index for Light Going from Glass to Air Will Be: (A) `1/3` (B) `4/5` (C) `4/6` (D) `5/2` Concept: Refraction of Light - Refractive Index.

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