Companion PDF worksheet for Edexcel IGCSE Physics Lecture 16 - Reflection and Refraction. Contains short answer questions, an activity requiring lateral thinking and exam-style questions.
Specification Point 3.14 - Know that light waves are transverse waves and that they can be reflected and refracted.
Specification Point 3.15 - Use the law of reflection.
Specification Point 3.16 - Draw ray diagrams to illustrate reflection and refraction.
Specification Point 3.17 - Practical: investigate the refraction of light, using rectangular blocks, semi-circular blocks and triangular prisms.
Specification Point 3.18 - Know and use the relationship between refractive index, angle of incidence and angle of refraction.
Specification Point 3.19 - Practical: investigate the refractive index of glass, using a glass block.
Specification Point 3.20 - Describe the role of total internal reflection in transmitting information along optical fibres and in prisms.
Specification Point 3.21 - Explain the meaning of critical angle c.
Specification Point 3.22 - Know and use the relationship between critical angle and refractive index.
Specification Point 3.23 - Know that sound waves are longitudinal waves which can be reflected and refracted.
Complete set of Chapter 3 Worksheets are available.
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