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A right-angled isosceles glass prism is ...

A right-angled isosceles glass prism is immersed in water of refractive index 4/3 .A ray of light falling on the prism at an angle of incidence of `60^@` is found to emerge from the other side at the same angle of` 60^@` .The refractive index of the material of the prism is: 1. `sqrt((8)/(3))` 2. `sqrt((3)/(8))` 3.` sqrt((3)/(2))` 4. `sqrt((4)/(3)) `

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