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🔍 PREVIEW MODE – Only you can see this. Back to Admin EduTek Lesson Notes Shop Print PDF Home › SS › Physics › Light II – Refraction SS 1 Light II – Refraction Physics SS 1 Third Term (Week 2) 📌 Learning Objectives By the end of this lesson, you should be able to: Define refraction and explain why it occurs. State the laws of refraction (Snell's Law). Define refractive index and calculate it using n = sin i / sin r. Explain the relationship between refractive index and speed of light (n = c/v). [Preview only]