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For the arrangement shown in the figure,...

For the arrangement shown in the figure, what is the density of oil?
.

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The correct Answer is:
A, C
`p_(B)=p_(A)`
`:. p_(0)+rho_(w) gl=p_(0)+rho_(oil) (l+d)g`
`implies rho_(oil)=(rho_(w)l)/(l+d)=((1000)+(135))/((135+12.3)) =916 kg//m^(3)`.
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