Critical Angle (P3.9)

Real REAL QUICK summary of Critical Angle for the Edexcel GCSE Science Extention Units Student Book. In the book it is P3.9

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  • Critical Angle
    • Total Internal Reflection
      • This is when the there is no refraction and all the wave is reflected.
    • At angles less than critical angle, part is refracted, part is reflected.
      • This partial reflection and refeaction
    • Calculation critical angle
      • sin c/sin r=nr/ni


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