Question

Explain above question​

Answer 1

As the ice will melt,the water level will decrease because of anomalous expansion of water(Water in its liquid state is denser than ice because after 4°c water starts to expand instead of contracting).

And since the iron ball will be freed then and it will remain in the same water(in liquid state) it will further increase the volume of water because it will take its own space within that water level(that is it will occupy its volume) and thus increase the water level.

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