Question

calculate critical angle if refractive index is root 2​

Answer 1

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ANSWER ⏬

⏺️ Refractive index is n = c/v where c is velocity of light in vacuum and v in the medium. Since n = √2, v=c/√2. Now critical angle is arcsin(v/c) which in this case is arcsin(1/√2). It is 45 degrees.

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