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Calculate the velocity of the light ray in the medium, if the | NEET EXAM PDF

Calculate the velocity of the light ray in the medium, if the critical angle for TIR from medium to the vacuum is 30°.
Anonymous Quiz
15%
2 x 108 m/s
42%
1.5 x 108 m/s
24%
0.75 x 108 m/s
19%
3 x 108 m/s
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