A body experiences an upthrust $F_{1}$ in river water and $F_{2}$ in sea water when dipped up to the same level. Which relation is correct for $F_{1}$ , $F_{2}$ .

F_{2} < F_{1}

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F_{2} > F_{1}

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F_{2} = F_{1}

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None of the above are correct

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Solution

The correct option is B $F_{2} > F_{1}$ .
$F_{2}$ will be more than $F_{1}$ i.e. upthrust from the sea water will be more than the upthrust from the river water.
This is because density of sea water is more than that of river water, and upthrust is directly proportional to the density. More the density, greater is the upthrust.

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A body experiences an upthrust F1 in river water and F2 in sea water when dipped up to the same level. Which relation is correct for F1 , F2 .

A body experiences an upthrust $F_{1}$ in river water and $F_{2}$ in sea water when dipped up to the same level. Which relation is correct for $F_{1}$ , $F_{2}$ .