Question

The density of tap water is less than that of seawater. If an object is immersed completely in both one by one, what will its loss in weight be?

• A. More in sea water.
• B. Less in sea water.
• C. Equal in both the cases.
• D. Zero in seawater but not so in the case of tap water.

Answer 1

The correct option is A More in sea water.

Loss of weight depends on upthrust. Upthrust depends on the density of the liquid. In other words,
Loss of weight in water = volume of water displaced x density of water
The volume of water displaced is same in both the cases, so the loss in weight is more in the water which is denser.
As seawater is denser than tap water, therefore the loss in weight is more in it.