Question

relation between critical angle and refractive index

Answer 1

When the angle of refraction is equal to 90°, the angle of incidence is called the critical angle, At any angle of incidence greater than the critical angle, the light cannot pass through the surface - it is all reflected. Total because all of the energy is reflected

Answer 2

When the angle of refraction is equal to 90°, the angle of incidence is called the critical angle, At any angle of incidence greater than the critical angle, the light cannot pass through the surface - it is all reflected. Total because all of the energy is reflected.
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