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प्रश्न
If a ray of light passes from a denser medium to a rarer medium in a straight line, the angle of incident must be ______.
विकल्प
0°
30°
60°
90°
MCQ
रिक्त स्थान भरें
उत्तर
If a ray of light passes from a denser medium to a rarer medium in a straight line, the angle of incident must be 0°.
shaalaa.com
Partial Internal Reflection
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