Grade 11 Physical Sciences · Waves, Sound and Light
Explain refraction and total internal reflection
Explain why light bends when it changes speed between materials, and when total internal reflection happens (light trapped inside an optical fibre).
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Question WE3 · Siyavula Grade 11 Physical Sciences, 5.6 Snell's Law, Worked example 3 · 3 marks
WE3 A light ray with an angle of incidence of passes from water to air. Find the angle of refraction using Snell's Law (refractive index of water , of air about ). Discuss the meaning of your answer.(3)
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