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The refractive index of a prism is sqrt...

The refractive index of a prism is `sqrt(2)`. A ray of light is incident on the prism grazing along one of its refracting surface. What should be the limiting angle of the prism for no emergent ray from the other face?

Text Solution

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If the limiting angle of the prism for no emergent ray is A, then
` A = 2sin^(-1)""(1)/(mu) = 2sin^(-1)""(1)/(sqrt(2)) = 2 xx 45^(@) = 90^(@)`
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