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A vessel contain oil (Density=0.8gm/cm^3...

A vessel contain oil (Density=0.8gm/`cm^3`) over mercury ( density=13.6gm/`cm^3`) . A homogenous sphere floats with half of it's volume immersed in mercury and the other half in oil . The density of the material of the sphere in `(gm)/(cm)^3` is

A

a)3.3

B

b)6.4

C

c)7.2

D

d)2.8

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The correct Answer is:
C
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