Respuesta :
For total internal reflection, angle of incidence must be greater than critical angle. If refractive index is lower on the other side of water and angle of incidence is greater than critical angle, then total internal reflection will occur in water. So other side of the water must be air!
To ensure 100% internal reflection in water, the light must first pass through glass or a diamond before entering the water.
What is an index of refraction?
The refractive index of a substance also known as the refraction index or index of refraction is a dimensionless quantity that specifies how quickly light passes through it in optics.
The speed at which light waves travel changes as the medium changes. The absolute refractive index changes.
Angle of incidence must be larger than critical angle for entire internal reflection.
Total internal reflection occurs in water when the refractive index on the other side of the water is lower and the angle of incidence is larger than the critical angle.
So there must be oxygen on the other side of the river. Light must go from a medium object of greater density to a medium object of lower density for total internal reflection to occur.
To ensure 100% internal reflection in water, the light must first pass through glass or a diamond before entering the water.
In the water, the angle of incidence is 50 degrees. It experiences entire internal reflection because the angle of incidence is larger than the air-water critical angle of roughly 48°.
To learn more about the index of refraction refer to the link;
https://brainly.com/question/23750645
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