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Question

An ice cube contains a glass ball. The cube is floating on the surface of water contained in a trough on the surface of water contained in a trough. What will happen to the water level, when the cube melts?

A
It will remain unchanged
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B
It will fall
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C
It will rise
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D
First it will fall and then rise
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Solution

The correct option is A It will remain unchanged
When the cube melts, the water level will remain the same.An floating object displaces an amount of water equal to its own weight. Since, water expands when it freezes, one ounce of frozen water has a larger volume than one ounce of liquid water.

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