Q8,Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The
speed of light in vacuum is 3 x 10^8 m/s
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Answer:Given parameters
Speed of light in vacuum (c) = 3 × 108 ms-1
Refractive index of glass (ng) = 1.50
Find out
The speed of light in the glass
Formula
Refractive index of a medium = Speed of light in vacuum/Speed of light in the medium
Refractive index of glass = Speed of light in vacuum/Speed of light in the glass
Speed of light in the glass (v) = Speed of light in vacuum/ Refractive index of glass
v = c/ng
v = (3 × 108)/1.50
v = 2 × 108 ms-1
Answer
The speed of light in glass = v = 2 × 108 ms-1
Explanation:
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