(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The drawing shows a crystalline quartz slab with a rectangular cross-section. A ray

of light strikes the slab at an incident angle of 1=34o, enters the quartz and travels to

point Po (Figure2). This slab is surrounded by a fluid with a refractive index n. What

is the maximum value of n such that total internal reflection occurs at point Po?

@1= 34deg n2= 1.544

2. Relevant equations

n1sin@1 = n2sin@2

@c = sin-1 (n2/n1)

3. The attempt at a solution

Well I know in order to find n1 I need to know the critical angle, but I don't know how to find the critical angle without n1. My only idea was to use Snell's law of refraction to find n1 by setting @1 at 90deg?

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# Homework Help: Total Internal Reflection of quartz

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