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A thin prism of glass is placed in air a...

A thin prism of glass is placed in air and water respectively. If `n(g)=3/2` and `n_(w)=4/3`, then the ratio of deviation produced by the prism for a small angle of incidence when placed in air and water separately is

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The correct Answer is:
4
`delta_(a)(3/2-1)xxA=A/2`
`delta_(W)=((3//2)/(4//3)-1)A=A/8`
`(delta_("air"))/(delta_("water"))=4/1`
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