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Question
Speed of light in air is 3 × 108 m s–1 and the refractive index of a medium is 1.5. Find the speed of light in the medium.
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Solution
Given:
Speed of light in air c = 3 x 108 ms-1
Refractive index of a medium µ = 1.5
To find : Speed of light in medium v = ?
Formula :
µ = `c/u`
Solution:
1.5 = `3xx10/u`
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