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Akhilesh took sea water and river water ...

Akhilesh took sea water and river water in two containers. He made a body float in the river water and then in the sea water. What happens to the immersed part of the body when it is immersed in the rive water and in the sea water?

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The density of the sea water is greater than the density of the river water. So, when a body rises a little when it is immersed in the sea water compared to that in the river water.
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