- #1

Taylor_1989

- 402

- 14

## Homework Statement

Calculate the angle between the ray PQ and the ray RS

Anouther ray TQ also strikes the surface at Q. The refractive index of the glass is 1.50

## Homework Equations

c= 1/ refractive index

## The Attempt at a Solution

The answer on my sheet say it is 20 degree, I have had to different attempts which have give me 20.9 and 21.6 neither which i think is right. I cal the 1st on by: 1/1.50=41.8/2 which gave 20.9 and the second by 85-41.8/2 which gave 21.6. I took the refractive index from a question further down, which I have put in, but I don't need help with that question. As this is in my book and taken from a past paper, I don't know that If i looked at the exam paper, I could just measure the angle. But as it says calculate I assume, I have to use the equations