What is condition for total internal reflection to occur?

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Swati Datta

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For total internal reflection to occur, 2 conditions must be met: 1. The index of refraction must decrease across the boundary in the direction of light refraction. 2. The angle of incidence of the light ray must exceed the critical angle of the interface.
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If ? > ?c, the entire ray reflects from the boundary. None passes through. This is called total internal reflection
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Total interior angle of reflection is much greater than critical angle than this is known as total internal reflection.
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The light is in the more dense medium and approaching the less dense medium. the angle of incidence is greater than the so-called critical angle.
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Ray must travel from denser to rarer medium.
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Ray must travel from denser to rarer medium. Angle of incidence in denser should be equal to or greater than critical angle.
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For total internal reflection to occur, two conditions must be met: The index of refraction must decrease across the boundary in the direction of light refraction. The angle of incidence of the light ray must exceed the critical angle of the interface.
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The first condition is that the light should travel from optically denser to optically rarer medium, and the second condition is that the angle of incidence should be more than the critical angle.( Critical angle is the angle of incidence at which the refracted angle becomes 90 degrees. If the angle...
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The first condition is that the light should travel from optically denser to optically rarer medium, and the second condition is that the angle of incidence should be more than the critical angle.( Critical angle is the angle of incidence at which the refracted angle becomes 90 degrees. If the angle of incidence exceeds the critical angle then the phenomenon of total internal reflection occurs) read less
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For total internal reflection to occurs angle of incident will be greater than critical angle.
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