May/June 2026 Paper 23

2026 · 40 questions · 40 parts · 40 marks

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19Refraction Total Internal ReflectionMedium1 mark
The diagram shows a ray of light entering a glass block.
a ray of light in air meeting a glass block at 44° to the surface (46° to the normal), refracting into the glass at 26° to the normal
What is the refractive index of the glass?