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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 - Science

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#### 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:

1n2 ="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.