Question

The critical angle for total internal reflection at an air-water interface is approximately 48o . In which of the following situations will total internal reflection occur?

light incident in water at 40o
light incident in water at 55o
light incident in air at 40o
light incident in air at 48o

Answer 1

Answer on question #52741, Physics, Optics

Question The critical angle for total internal reflection at an air-water interface is approximately 48^{∘}. In which of the following situations will total internal reflection occur?

light incident in water at 40^{∘}

light incident in water at 55^{∘}

light incident in air at 40^{∘}

light incident in air at 48^{∘}

Solution Total internal reflection will occur when light incident in water at 55^{∘}, as it occurs when light incident from medium with higher refractive index.

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