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Questions
The speed of light in air is 3 × 108 m s-1. Calculate the speed of light in glass. The refractive index of glass is 1.5.
The refractive index of glass is 1.5. Calculate the speed of light in glass. The speed of light in air is 3 × 108 m s-1.
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Solution
Given:
Speed of light in air (c) = 3 × 108 m/s-1
Refractive index of glass (μ) = 1.5
Speed of light in glass, v = ?
Formula:
`c/v=μ`
`v=(3xx10^8"m/s")/1.5`
v = 2 × 108 m/s
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