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A cube of iron whose sides are of length...

A cube of iron whose sides are of length L, is put into mercury. The weight of iron cube is W. The density of irons is `rho_(1)`, that of mercury is `rho_(M)`. The depth to which the cube sinks is given by the expression

A

`WL^(2)rho_(1)`

B

`WL^(2)rho_(M)`

C

`(W)/(L^(2)rho_(1))`

D

`(W)/(L^(2) rho_(M)g)`

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