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The density of asir ner earth's surface ...

The density of asir ner earth's surface is `1.3kgm^-3` and the atmospheric pressure is `1.0xx10^5Nm^-2`. If the atmosphere had uniform density, same as that observed at the surface of the earth what would be the height of the atmosphere to exert the same pressure?

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The correct Answer is:
`(7.85 "km")`
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