DiagramModerate2 marks
The diagram below shows a light source P embedded in a rectangular glass block ABCD of critical angle 42°. Complete the path of the ray PQ till it emerges out of the block. [Write necessary angles.]
Topic: Refraction / total internal reflection
Previous-year question practice database
Answer
Solution diagram
Exam answer
Complete the path using refraction and total internal reflection where the internal incidence exceeds 42°, marking the relevant angles.
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