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A cubical block of side 10 cm floats at ...

A cubical block of side 10 cm floats at the interface of an oil and water. The pressure above that of atmosphere at the lower face of the block is

A

`200 Nm^(-2)`

B

`680 Nm^(-2)`

C

`400 Nm^(-2)`

D

`800 Nm^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Pressure, `p=p_(0)+rho_(1)gh_(1)+rho_(2)gh_(2)`
or `p-p_(0)=rho_(1)gh_(1)+rho_(2)gh_(2)`
`=(600)(10)(0.1)+(1000)(10)(0.02)=800 Nm^(-2)`
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