Complete the condition for total internal reflection

Exercise and reference answers

Missing parts

1. Answer

   denser

   Choices

   1. denser
   2. rarer
   3. transparent

2. Answer

   rarer

   Choices

   1. rarer
   2. denser
   3. opaque

3. Answer

   greater than

   Choices

   1. greater than
   2. less than
   3. equal to

Complete the statement

Total internal reflection needs light travelling from a {0} medium to a {1} one, at an angle of incidence {2} the critical angle.

Explanation