Physics A-Level
Critical angle and refractive index
What Critical angle and refractive index means in Physics A-Level, as defined for AQA.
Definition of Critical angle and refractive index
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Reference: AQA
The critical angle C is given by sin C = n_cladding / n_core, where n_core > n_cladding.
Topics that use Critical angle and refractive index
- Fibre optics and endoscopy (A-level only) (AQA A-Level)
Related terms
- Coherent fibre bundle
- Internal imaging
- Medical imaging and endoscopy
- Objective lens
- Optical fibres
- Total internal reflection
- Non-coherent fibre bundle
Using Critical angle and refractive index in the exam
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