What is the refractive index of glass is 1.5 and speed of light in air is 3 into 10 power 8 meters per second the speed of light in glass?

The speed of light in air is 3 × 10 8 m s 1. Calculate the speed of light in glass. The refractive index of glass is 1.5.

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The refractive index of glass is 1.5. What is the speed of light in glass? (Speed of light in vacuum is 3.0 × 108 m s−1)

Refractive index of glass, μ = 1.5

Speed of light, c = 3 × 108 m/s

Speed of light in glass is given by the relation

`"v" = "c"/μ`

= `(3 xx 10^8)/1.5`

= 2 × 108 m/s

Hence, the speed of light in glass is 2 × 108 m/s.

Given:

Refractive index of glass = 1.5

Speed of light in air = 3.0 × 108 m/s

Speed of light in glass = ?

Applying the formula for refractive index, we get:

Refractive index of a medium = (Speed of light in air)/(Speed of light in medium)

For glass:

Refractive index of glass = (Speed of light in air)/(Speed of light in glass)

(Speed of light in glass) = (Speed of light in air)/(Refractive index of glass)

= (3.0 × 108)/1.5

= 2.0 × 108 m/s

Concept: Reflection and Refraction of Plane Wave at Plane Surface Using Huygens' Principle - Refraction of a Plane Wave

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