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A block of wood floats in water with ((4...

A block of wood floats in water with `((4)/(5))^(th)` of its volume submerged. In an oil, it floats with `((9)/(10))^(th)` volume submerged. The ratio of the density of oil and water is

A

`8//9`

B

`9//8`

C

`19//25`

D

`25//18`

Text Solution

Verified by Experts

The correct Answer is:
A
`d_(w)Vg=(4)/(5)Vd_(w)g" ……..(1)"`
`d_(w)Vg=(9)/(10)Vd_("oil")g" ………………..(2)"`
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