Question

Calculate the speed of light in water . The speed of light in air is 3×10 what is refrective index

Answer 1

Refractive index of water is 1.33
Refractive index=speed of light in vacuum/speed of light in water
speed of light in water=3*10^8 / 1.33 =225563910m per sec

Answer 2

Answer:

Refractive index (μ) = 1.33 = 4343 Speed of light in air(c) = 3 x 108;  Speed of light in water =?  We know that  µ = cvcv 4343 = 3×108v3×108v ⇒ v = 3×3×1084=9×10843×3×1084=9×1084 ⇒ v= 2.25 × 108m/s.  Hence speed of light in water is 2.25 × 108m/s.

Explanation:

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