Question

what is critical angle? Explain the formation of mirage​

Answer 1

As the incident angle increases, there reaches a critical angle after which the light rays will not pass through the second medium, instead get reflected back to the first medium itself. This critical angle is the minimum condition for the total internal reflection

Answer 2

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As the incident angle increases, there reaches a critical angle after which the light rays will not pass through the second medium, instead get reflected back to the first medium itself. This critical angle is the minimum condition for the total internal reflection.