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Error and Uncertainty

An iron cube ...

Question

An iron cube floats in a vessel containing mercury at $20^{\circ} C$ . If the temperature is increased by $100^{\circ} C$ , then the cube will float.

A

Lower

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B

Higher

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C

At same level

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D

Lower or higher depending on mass of cube

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Solution

The correct option is A Lower
When temperature is increased, then the density will decrease, so cube will float lower.

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