An optical fibre (mu = 1.72) is surrounded by a glass coating (mu =1.50 ). Find the critical angle for total internal reflection at the fibre-glass interface.

An optical fibre (mu = 1.72) is surrounded by a glass coating (mu =1.5

1.	An optical fibre (mu = 1.72) is surrounded by a glass coating (mu =1.50 ). Find the critical angle for total internal reflection at the fibre-glass interface.
Answer» SOLUTION :`theta_C = SIN^(-1) (75 )/( 86 )`

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An optical fibre (mu = 1.72) is surrounded by a glass coating (mu =1.50 ). Find the critical angle for total internal reflection at the fibre-glass interface.

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