A) Rises
B) Falls
C) Remains unchanged
D) Rises till half the number of stones are unloaded and then begins to fall
Correct Answer: B
Solution :
From Archimedes' principle weight of water displaced is equal to weight of stone. The level will fall because when the large stone was in the boat, volume of water displaced is equal to volume of large stone. But when the stone is dropped in the lake, it displaces volume of water equal to its volume which is less than in the previous case.
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