Question

6.)The refractive index of glass and water with respect to air are 3/2 and 4/3 respectively. if the speed of light in glass is 2×10 8^ m/s, find the speed of light in water.

Answer 1

The speed of light in a medium of refractive index $\mu$ is

$\frac{c}{\mu}$, where $c$ speed of light in air.

Since the speed of light in glass is $2*10^8$, the speed of light in air is

$2*10^8 (\frac{3}{2} )=3*10^8$.

So the speed of light in water is

$\frac{3*10^8}{4/3} =2.25*10^8\;m/s$

Answer 2

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☯️Ur answer is in the attachment☯️

♥️${Be} ^{Brainly }$♥️