Year 11 GCSE (Higher) SPACE FOR REFLECTION OCR Gateway Science Suite Lessons 13-14 (P5g) 1) Calculate refractive index using the equation: n = c / v 2) Use and manipulate Snell’s law in terms of angles of incidence and refraction: n = sin i / sin r 3) Calculate the critical angle from the refractive index using the equation: sin c = nr / ni
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