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5.1 Reflection, refraction and lenses

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Question 24
H

Light inside a transparent block meets a block-air boundary. The angle between the incident ray and the surface is 46∘46^\circ46∘. The ray undergoes total internal reflection. Which value could be the critical angle for this boundary?

[1]
A

44∘44^\circ44∘

B

45∘45^\circ45∘

C

43∘43^\circ43∘

D

47∘47^\circ47∘

Markscheme

5.1 Reflection, refraction and lenses Questions

  1. GCSE
  2. /Physics
  3. /5.1 Reflection, refraction and lenses

93 exam-style questions on Edexcel GCSE Physics 5.1 Reflection, refraction and lenses, covering 5.1.1 Reflection, refraction and total internal reflection, 5.1.2 Specular and diffuse reflection, 5.1.3 Colour of light: absorption and filters, 5.1.4 Lenses: power, focal length and shape, 5.1.5 Ray diagrams for converging and diverging lenses, and 5.1.6 Real and virtual images. Each one has a worked solution and a mark scheme showing where the marks go.

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