PH-1747
Total internal reflection
Physics · Secondary 4 · Hard · Total internal reflection
A light ray travels from water (refractive index 1.33) into air. The critical angle in water is the angle of incidence in water for which the angle of refraction in air is 90°. Using Snell’s law, calculate the critical angle.
Take refractive index of air as 1.0.
Take refractive index of air as 1.0.
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