Jawapan Buku Teks Fizik Tingkatan 4 Kssm Aktiviti 13 Top Full 〈Chrome〉
| Angle of incidence, i (°) | Angle of refraction, r (°) | sin i | sin r | n = sin i / sin r | |---------------------------|----------------------------|-------|-------|-------------------| | 20 | 13 | 0.342 | 0.225 | 1.52 | | 30 | 19 | 0.500 | 0.326 | 1.53 | | 40 | 25 | 0.643 | 0.423 | 1.52 | | 50 | 31 | 0.766 | 0.515 | 1.49 |
Image height = m × object height = 2 × 2 cm = | Angle of incidence, i (°) | Angle
Magnification, m = v/u = 30/15 =
A light ray travels from water (n = 1.33) into air. The angle of incidence in water is 35°. Calculate the angle of refraction in air. Why does a diamond sparkle more than a glass piece
Why does a diamond sparkle more than a glass piece? Calculate the refractive index of the medium
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)
n = 1 / sin c n = 1 / sin 24.4° n = 1 / 0.413 = 2.42