G3 Pure Physics / O‑Level Physics: Light structured questions
Structured and data-based Paper 2 practice for waves: wave properties, sound, electromagnetic spectrum, reflection, refraction, total internal reflection, and lenses.
Learning objectives
- Use the normal, angle of incidence and angle of reflection
- Apply the law of reflection in constructions, measurements and calculations
- Use the normal, angle of incidence and angle of refraction
- Apply sin i divided by sin r as a constant for a fixed pair of media
- Define refractive index as vacuum light speed divided by medium light speed
- Explain the critical angle
- Explain the conditions for total internal reflection
- Apply total internal reflection to optical fibres and state advantages
- Describe how a thin converging lens acts on a light beam
- Define the focal length of a converging lens
- Construct real and virtual image ray diagrams for a thin converging lens
- Describe lens images as real or virtual, magnified or diminished, and upright or inverted
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