Physics A-Level
Refractive index
What Refractive index means in Physics A-Level, as defined for OCR.
Definition of Refractive index
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Reference: OCR
Defined as n = c/v, the ratio of the speed of light in a vacuum to its speed in the medium; it is dimensionless and always ≥ 1.
Topics that use Refractive index
- Electromagnetic waves (OCR A-Level)
Related terms
- Critical angle
- Orders of magnitude across the spectrum
- Refraction
- Refraction in rectangular blocks
- Shared wave behaviours and differing photon energies
- sin C = 1/n
- Spectrum ordering by wavelength and frequency
- Total internal reflection
Using Refractive index in the exam
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