A) Kapler
B) Archimedes
C) Newton
D) Einstein
Correct Answer: B
Solution :
Archimedes principle states that when a body is immersed wholly or partially in a liquid, it experiences an upward buoyant force of magnitude equal to the weight of the liquid displaced by it. Iron nail sinks in water due to its more density and less surface area while ship floates due to its large surface area.
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