Calculate critical angle of a medium of refractive index 1.65 when light passes

Answer 1

The critical angle can be calculated using the formula:

Critical Angle = sin^(-1)(1/n)

Where n is the refractive index of the medium.

Given that the refractive index, n, is 1.65, we can calculate the critical angle as:

Critical Angle = sin^(-1)(1/1.65)
Critical Angle ≈ sin^(-1)(0.6061)
Critical Angle ≈ 37.52 degrees

Therefore, the critical angle of a medium with a refractive index of 1.65 is approximately 37.52 degrees.