The average refractive index of glass, n = (1.52 + 1.53 + 1.52 + 1.49) / 4 = 1.515 Thus, the refractive index of the glass block is 1.52 . Section B: Calculation Problems (Aktiviti 13.2) Question 1: The speed of light in a medium is 2.0 × 10⁸ m/s. Calculate the refractive index of the medium. (Speed of light in vacuum = 3.0 × 10⁸ m/s)
Image height = m × object height = 2 × 2 cm = The average refractive index of glass, n = (1
Using Snell’s Law: n₁ sin i = n₂ sin r 1.33 × sin 35° = 1.00 × sin r 1.33 × 0.574 = sin r sin r = 0.763 r = sin⁻¹ (0.763) = 49.8° Section C: Total Internal Reflection (Aktiviti 13.3) Question: The critical angle for diamond is 24.4°. Calculate the refractive index of diamond. (Speed of light in vacuum = 3
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