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Tow liquids of desities rho(1) and rh...

Tow liquids of desities `rho_(1)` and `rho_(2)(rho_(2) = 2rho_(1))` are filled up behind a square wall of side 10 m as shown in the figure. Each liquids has a height of 5m. The ratio of the forces due to these liqyuids exeted on upper part MN to that at the lower part NO is (Assume that the liquids are not mixing):

A

`2//3`

B

`1//4`

C

`1//3`

D

`1//2`

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