Light enters from air to glass plate having refractive index 1.50. What is speed of light in glass? The speed of light in vacuum is 3 x10^8 m/s.
Answers
c = 3x10^8
vg=???
ng = c/vg
1.50= 3x10^8 / vg
vg= 3x10^8/ 1.50
vg= 300x10^8/150
vg= 2x 10^8
speed of light in glass is 2x10^8
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Hey Buddy ❤
Your Answer -
Given :
Speed of light in vacuum, c = 3 × 10^8 m/s
Refractive index of glass = 1.50
Formula :
Refractive index of a medium = Speed of light in vacuum/Speed of light in the medium
Solution :
Speed of light in the glass
= Speed of light in vacuum/ Refractive index of glass
=3 × 10^8/1.50
= 2x 10^8 ms-1
Glad To Help :D
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