Question: A light beam emerges from a GaAs crystal. Calculate the fraction of light intensity reflected back into the crystal if the light is normally

$A light beam emerges from a GaAs crystal. Calculate the fraction of light intensity reflected back into the$

A light beam emerges from a GaAs crystal. Calculate the fraction of light intensity reflected back into the crystal if the light is normally incident. The refractive index of GaAs is 3.6.

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