The index of refraction for the cubic zirconia at the given speed of light is 2.16.
The given parameters:
- Speed of light in Cubic zirconia, v = 1.39 x 10⁸ m/s
- Speed of light in air, c = 3.0 x 10⁸ m/s.
The index of refraction for the cubic zirconia is the ratio of the speed of light in air to speed of light in cubic zirconia and it is calculated as follows;
[tex]\eta = \frac{c}{v} \\\\\eta = \frac{3\times 10^8}{1.39 \times 10^8} \\\\\eta = 2.16[/tex]
Thus, the index of refraction for the cubic zirconia at the given speed of light is 2.16.
Learn more about index of refraction here: https://brainly.com/question/10729741
