Question

A 330 nm lightwave travels through a piece of quartz (n=1.544) and enters into a pool of water (n=1.33). Find the critical an
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Answer #1

Refractive index of quartz, nq = 1.544

Refractive index of water, nw = 1.33

Let C be the critical angle for quartz water interface.

Sin C = nw/nq = 1.33/1.544 = 0.8614

Critical angle, C = Sin-10.8614 = 59.40

** 59.40

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