Thanks guys I just reliased I was being stupid. I was taking the angle of incident for the critical angle to be 27° instead of taking it from the normal. Thanks for the help:-p
Part A i just need to know if i have done it properly.
Part B is done
Part c don't have a clue :cry:
Homework Statement
Homework Equations
Law of refraction n1*sinχ1=n2*sinχ2
Critical Angle sine(x) = nr/ni
The Attempt at a Solution
part a is on the image above
part b I have done it...