Answer:
Explanation:The refractive index of a medium is the ratio of the speed of light in vacuum or air to the speed of light in that medium. In this case, we can calculate the refractive index of water as follows:
Refractive index of water = Speed of light in air / Speed of light in water
Refractive index of water = 3 x 10^8 m/s / 2.26 x 10^8 m/s
Refractive index of water = 1.33 (rounded to two decimal places)
Therefore, the refractive index of water is approximately 1.33.