Physics
The condition required for total internal reflection to take place is:
- light ray passes from a rarer to denser medium
- light ray passes from a denser to rarer medium
- angle of incidence is less than critical angle
- none of the above
Refraction Plane Surfaces
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Answer
light ray passes from a denser to rarer medium
Reason — The two necessary conditions for total internal reflection are —
- The light must travel from a denser medium to a rarer medium.
- The angle of incidence must be greater than the critical angle for the pair of media.
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