Q. 6

If water be used to construct a barometer, what would be the height of water column at standard atmospheric pressure (76 cm of mercury)?

Answer :

The atmospheric pressure from a mercury column is,

. —————(1)


For water we have, —————(2)


As the atmospheric pressure should be same, (1) must be equal to (2)



(ANS)


Thus to make a barometer using water, we require the height of 10.336 m.


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