Physicsmedium · Past Paper
A piece of iron sinks in water but a huge ship made of iron floats. This is because:
AIron has less density than water
BThe ship displaces more weight of water than its own weight
CThe average density of the ship is less than water
DThe ship is flat
✓ Correct Answer: C — The average density of the ship is less than water
Because of the hollow space and air inside, the average density of the ship is less than that of water, allowing it to float according to the law of floatation.
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