DiagramModerate2 marks
A ray of light falls normally on a rectangular glass slab. Draw a ray diagram showing the path of the ray till it emerges out of the slab.
Topic: Refraction / total internal reflection
Previous-year question practice database
Answer
Solution diagram
Exam answer
Draw a straight undeviated ray through the slab along the normal.
Explanation
At normal incidence i = r = 0°.
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