MCQEasy1 mark
1
Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)
When a ray of light travels normal to the given surface, then the angle of refraction is: (a) 180° (b) 90° (c) 0° (d) 45°
Topic: Normal incidence
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Answer
Exam answer
(c) 0°.
Explanation
A ray incident normally passes undeviated, so i = r = 0°.
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