Questions
If the critical angle for total internal reflection from a medium to vacuum is 45°, then velocity of light in the medium is,
a
3 × 108 m/s
b
1.5 × 108 m/s
c
32x 108 m/s
d
2x108 m/s
detailed solution
Correct option is C
sinC=1μsin45∘=1μ12=1μμ=2Velocity of light in mediumv=cμv=3×1082m/sTalk to our academic expert!
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A ray of light travels from an optically denser to rarer medium. The critical angle for the two media is c. The maximum possible deviation of the ray will be
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