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In an experiment on measurement of loss ...

In an experiment on measurement of loss in weight of an iron ball immersed in tap water and salty water separately. When is the maximum loss in weight of iron ball observed ?

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When the iron ball is immersed in tap water and then in salty water, in both cases the volume V of displaced liquid (ie.. water) would be same. The upthrust of the fluid depends upon its density. The density of salty water is more than that of tap water. So, salty water will give more upthrust than tap water. Hence, the maximum loss in weight of iron ball will be observed in salty water.
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