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Angle of the prism A = 72^(@) and its re...

Angle of the prism A = `72^(@)` and its refractive index is 1.66 the prism is immersed in a liquid of refractive index 1.33 Find the angle of minimum deviation for a parallel beam of light passing through the prism .

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The correct Answer is:
`22^(@)`22'
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