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# The Refractive Indices of Four Media A, B, C and D Are 1.44, 1.52, 1.65 and 1.36 Respectively. When Light Travelling in Air is Incident in These Media at Equal Angles, the Angle of Refraction - CBSE Class 10 - Science

ConceptRefraction of Light Refractive Index

#### 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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#### APPEARS IN

Solution The Refractive Indices of Four Media A, B, C and D Are 1.44, 1.52, 1.65 and 1.36 Respectively. When Light Travelling in Air is Incident in These Media at Equal Angles, the Angle of Refraction Concept: Refraction of Light - Refractive Index.
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