(adsbygoogle = window.adsbygoogle || []).push({}); http://img210.imageshack.us/img210/6094/questionuz8.png [Broken]

i) What is the angle of refraction of the ray RS after it strikes the glass prism of refractive index=1.5?

ii) If the critical angle is 41.8 degrees, deduce whether the ray will suffer total internal reflection.

2. Relevant equations:

Snell's Law

3.

1) Snell's Law:

n=sin i / sin r

1.5=sin45/sinR

sinR * 1.5 = sin45

sinR = sin45 / 1.5

R = sin^-1 (sin45 / 1.5)

R= 28.1 degrees

2) I have no idea what I could do to deduce whether it would suffer TIR or not... please help. Thank you :)

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Refraction and Total Internal Reflection

**Physics Forums | Science Articles, Homework Help, Discussion**