PLEASE EXPLAIN IN DETAIL COULD NOT UNDERSTAND FROM THE EXPLANATION GIVEN.

For object floats:

Archemedes' Principle. The upthrust on the body is equal to the weight of the water displaced.

Half of the body is immersed, it means it displaces a volume of water equal to half of it's own volume.

So, weight of water of half the volume of object would be equal to the weight of the object as it is floating.

Now go through the equations. This has been solved to get the answer.

For 8th

Density = Mass/Volume

What happens if you keep the mass same and increase the value of volume? The density would decrease, right? Yes.

The rest has been explained in the question.

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