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The refractive index of a prism is 2. th...

The refractive index of a prism is 2. this prism can have a maximum refracting angle of

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Critical angle `theta_(c)= sin^(-1)(1/mu)=sin^(-1)(1/2)=30^@`
If A gt2`theta_(c)` the ray does not emerge from the prism So, maximum refracting angle can be 60°.
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