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What is critical angel??

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What is critical angel??
  • 1 answers

Ankit Singh 6 years, 11 months ago

the critical angle is defined as the angle of incidence that provides an angle of refraction of 90-degrees. Make particular note that the critical angle is an angle of incidence value. For the water-air boundary, the critical angle is 48.6-degrees. Hope this will help u ???
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