Optics 7 (Internal Reflection)

Question 1

conditions for TIR

Answer 1

1. light must be speeding up
2. incident ry must be greater than critcal angle

Question 2

what is critical angle

Answer 2

the point where light stops refracting and reflects instead

Question 3

every medium has its own…

Answer 3

critical angle

Question 4

if inciden ray is less than critical angle

Answer 4

light will refact away from the normal

Question 5

if incident > critical angle

Answer 5

REFLECT

Question 6

if incident ray = critical angle

Answer 6

light will do neither