Question

2 The refractive index of water is 133. The speed of light in water will be
O 133 x 108 mis
O 3210 8 mis
O 225x105 m/s
D
O 256 x 108 mis​

Answer 1

Answer:

256×108m/s

Explanation:

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Answer 2

Refractive Index is inversely proportional to the velocity of light.

So,

Given, RI of water w.r.t air = 1.33

RI = C/v

4/3 = 3 × 10^8m/s/v

v = 3×10^8 × 4/3 = 10^8/4

V = 225×10^5m/s.