Critical angle Flashcards
1
Q
what is the law of refraction
A
n = sin i/ sin r
2
Q
explain total internal reflection
A
can occur only when light travelling from a dense material like glass meets a boundary with a less dense material like air.
3
Q
how do you calculate the angle of refraction
A
s
4
Q
how do you calculate the critical angle
A
sin c = 1/n
