The liquids shown in figure in the two arms are mercury (specific gravity =13.6) and water. If the difference of heights of the mercury columns is 2 cm, find the height of the water column.
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Why is the height of mercury column nearly 76 cm in the tube ?

If the length of the mercury column in a mercury barometer is 76 cm, what is the equivalent height of the water column ?

If water is used instead of mercury in a barometer, what will be the height of water column?

At normal atmospheric pressure the height of the mercury column in barometer is

What will be the height of mercury column in a barometer it it is taken to the moon?

The height of mercury which exerts the same pressure as 20 cm of water column, is

Water and oil are poured into the two limbs of a U-tube containig mercury. The interface of the mercury and the liquids are at the same height in both limbs. Determine the height of the water column h_(1) if that of the oil h_(2)=20cm . The density of the oil is 0.9 . .