The refractive index of water is 1.33. What will be the speed of light in water?
The refractive index of water is 1.33. What will be the speed of light in water?
(a) 1 x 108 m/s
(b) 1.33 x 108 m/s
(c) 3 x 108 m/s
(d) 2.25 x 108 m/s.
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(b) 2.26 x 108 ms-1
μ = \(\frac{c}{v}\) ⇒ v = \(\frac{c}{μ}\) = \(\frac{3 \times 10^8}{1.33}\) = 2.26 x 108 ms-1
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