Question text
21 The diagrams show light incident on the straight edge of a semi-circular glass block after passing through it. Which diagram shows refraction and an angle i equal to the critical angle of the glass? A B i i C D i i
21 The diagrams show light incident on the straight edge of a semi-circular glass block after passing
through it.
Which diagram shows refraction and an angle i equal to the critical angle of the glass?
A B
i
i
C D
i
i
Select your answer: