PHYS212 : Homework |
Reflection and Refraction
(b) Total internal reflection can occur at a planar interface under certain circumstances. It occurs for angles of incidence greater than the critical angle for which . Use Snell's law to find an expression for .
(a) Use this expression and the reflection and transmission
coefficients describing amplitudes we derived in class to find
intensity transmission and reflection coefficients
(b) Verify that these expressions conserve energy at the
boundary. That is, show that
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