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A body floats on water and then also on an oil of density 1.25. Which of the following is/are true?

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The body weighs less weight in oil than in water.

The volume of water displaced is 1.25 times that of oil displaced.

The body experiences equal thrust from water and oil.

Apparent weight is zero in both cases.

answer is B.

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Detailed Solution

Concept: In this case, let's assume that the volume of the submerged object = the volume of the displaced water

v_{1}

Floating Condition

v_{1} g = vdg

v_{1} = vd

in oil
Similarly, the volume of the submerged object = the volume of the displaced oil

= v_{2} \Rightarrow v_{2} ​ (1.25) g = vdg

\Rightarrow v_{2} = \frac{vd​}{1.25} = \frac{v_{1}}{1.25} ​​

\Rightarrow v_{1} ​ = 1.25 v_{2} ​

In both cases, the object will surface. Therefore, the apparent weight is zero in both cases.
Therefore, there are multiple answers to this question.
Hence, option 2,3,4 is correct.

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