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If an observer sees the bottom of the ve...

If an observer sees the bottom of the vessel shown in Figure., at 8cm, find the refractive index of the medium in which the observer is present.

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The correct Answer is:
`(16)/(15)`
Since width of glass sheet is negligible, so neglecting effect of glass sheet.
`d_(app)=(d_(act))/(mu_(rel))rArr8=(10)/(((4)/(3mu)))`
`rArr 8(4)/(3mu)=10`
`rArr mu=(32)/(30)=(16)/(15)`
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