2025 · O/N · 5054/12 | Q27

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CIE-5054-2025-ON-p12 · Question 27

You may use a calculator. Take the weight of 1.0 kg to be 9.8 N (acceleration of free fall = 9.8 m/s²).
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27 Light passes into a transparent material that has a refractive index n. The angle of incidence at the surface of the transparent material is i. Which equation is used to calculate the angle of refraction r? n sin i A r = n sini B i = n sinr C sinr = D sinr = sin i n

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5054/12/O/N/25Cambridge O Level Physics 5054 · Oct/Nov 2025 · Paper 1 variant 2 · Question 27