Question

calculate speed of light in water of refractive index 4/3​

Answer 1

Answer:

Refractive Index = 4/3

Speed of light in air = 3 * 10⁰ m/s

We have to find Speed of light in water.

Substituting the values in the formula for refractive index:

refractive index of water = Speed of light

in air / Speed of light in water

4/3=3*10° / Speed of light in water

Speed of light in water = 3 108 * 3/4

Speed of light in water = 2.25 * 10⁰

Thus,

Speed of light in water is 2.25 * 108 m/s

Answer 2

Answer:

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Explanation:

Correct option is C)

R.I of water = Speed of light in vacuum / speed of light in water

3

4

=

x

3×10

8

x=2.25×10

8

m/s