cuquerob21

2023-03-08

The refractive index of water is 1.33.The speed of light in water is?

A. $4\times {10}^{8}m/s$

B. $3\times {10}^{8}m/s$

C. $2.25\times {10}^{8}m/s$

D. $1.33\times {10}^{8}m/s$

A. $4\times {10}^{8}m/s$

B. $3\times {10}^{8}m/s$

C. $2.25\times {10}^{8}m/s$

D. $1.33\times {10}^{8}m/s$

fessetekxty

Beginner2023-03-09Added 3 answers

Since, $\mu =\frac{c}{v}=\frac{\text{speed of light in air}}{\text{speed of light in medium}}$

So, μv=c

or $v=\frac{c}{\mu}=\frac{3\times {10}^{8}m/s}{1.33}=2.25\times {10}^{8}m/s$

So, μv=c

or $v=\frac{c}{\mu}=\frac{3\times {10}^{8}m/s}{1.33}=2.25\times {10}^{8}m/s$