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# Problem: A ray in glass is incident onto a water-glass interface, at an angle of incidence equal to half the critical angle for that interface. The indices of refraction for water and the glass are 1.33 and 1.64, respectively. The angle that the refracted ray in the water makes with the normal is closest to: a) 29° b) 39° c) 34° d) 44° e) 24°

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###### Problem Details

A ray in glass is incident onto a water-glass interface, at an angle of incidence equal to half the critical angle for that interface. The indices of refraction for water and the glass are 1.33 and 1.64, respectively. The angle that the refracted ray in the water makes with the normal is closest to:

a) 29°

b) 39°

c) 34°

d) 44°

e) 24°

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Total Internal Reflection concept. You can view video lessons to learn Total Internal Reflection. Or if you need more Total Internal Reflection practice, you can also practice Total Internal Reflection practice problems.

How long does this problem take to solve?

Our expert Physics tutor, Juan took 2 minutes and 55 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Halkiadakis' class at RUTGERS.