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.

Answer

`(16)/(15)`

Explanation

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)`