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Q. Which among the following is true about Total Internal Reflection?
Answer: A ray passing from denser to rarer medium and not able to pass to rarer medium at an angle greater than critical angle
Notes: A ray passing from denser to rarer medium and not able to pass to rarer medium at an angle greater than critical angle. Critical angle is the angle in which the incident ray is 90 degrees to that of the refracted ray.

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