Two cubes of side 1.0 msides, one of relative density 0.60 and another of relative density `=1.15` are connected by weightless wire and placed in a large tank of water. Under equilibrium the lighter cube will project above the water surface to a height of

Options

A. `50cm`
B. `25cm`
C. `10cm`
D. zero

Answer

B

Explanation

For equilibrium
`B'=(W+W')-B`
`(1-x)xx1^(2)xx1000xxg`
`=(1150xxg+600g)-1^(3)xx1000xxg`
`(1-x)xx1000=750`
`1-x=0.75`
`x=0.25m`
`x=25cm`