The velocity of light in air is 3×10⁸ m/s . Calculate the velocity of light in a Plexiglas of refractive index 1.51 .
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Answer:
According to Snell's Law:
sin r
sin i
=
n
1
n
2
=
v
2
v
1
and Refractive Index for air is ≈1
Substituting,
1
1.5
=
v
2
3×10
8
Therefore, v
2
=
1.5
3×10
8
=2×10
8
m/s
Explanation:
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