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10 cards from this deck
Light reflects completely back into denser medium at boundary
Angle of incidence where angle of refraction is 90°
Light travels from denser to less dense medium
Angle of incidence > critical angle
θc=sin−1(n2n1)\theta_c = \sin^{-1}\left(\frac{n_2}{n_1}\right)θc=sin−1(n1n2)
48.8°
90°
Inner core and cladding (lower refractive index)
Repeated total internal reflection at core-cladding boundary
100% - no light escapes into second medium
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