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प्रश्न
A student does the experiment on tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. He can get a correct measure of the angle of incidence and the angle of emergence by following the labelling indicated in figure.
विकल्प
A
B
C
D
MCQ
रिक्त स्थान भरें
उत्तर
D
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