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Total internal reflection is considered more efficient than ordinary mirror reflection ...

Total internal reflection is considered more efficient than ordinary mirror reflection because:
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  • A The refractive index becomes zero
  • B Wave frequency decreases
  • C Almost all light is reflected
  • D No colours are formed
Correct Answer: Option C
Explanation:
Metallic mirrors absorb part of the light energy, but total internal reflection reflects nearly all the light back into the medium. This makes it brighter and more efficient.

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