Physics GCSE
normal at 90°
What normal at 90° means in Physics GCSE, as defined for AQA.
Definition of normal at 90°
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Reference: AQA
A dashed line drawn at the point where the incident ray strikes the mirror, at 90° to the mirror surface.
Topics that use normal at 90°
- Reflection of waves (physics only) (AQA GCSE)
Related terms
- absorption
- law of reflection
- Reflection
- specular reflection
- transmission
- boundary between materials
- equal angles
- material interfaces
Using normal at 90° in the exam
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