Given
The refractive index of water is
[tex]\mu=1.33[/tex]To find
The speed of light in water
Explanation
Speed of light in a medium is:
[tex]v=\frac{c}{\mu}[/tex]Putting the values,
[tex]\begin{gathered} v=\frac{3\times10^8}{1.33} \\ \Rightarrow v=2.25\times10^8\text{ m/s} \end{gathered}[/tex]Conclusion
The speed of light in water is
[tex]2.25\times10^8\text{ m/s}[/tex]