Intext exercise Problem III — task. Science State Board, Class 9.

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The speed of light in water is

2.25 \times 10^{8} m / s

. If the speed of light in vacuum is

3 \times 10^{8} m / s

, calculate the refractive index of water.

The formula to find refractive index is

By applying the known values,

Refractive index $=$

Did you find an error?

3. Intext exercise Problem III