We can use water instead of mercury in a barometer.

We use water in-

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

In his original barometer, Pascal used water instead of mercury. Water is lwss dense than mercury, so the water barometer would have:(a) higher height than, (b) a lower height than, or (c ) the same height as the mercury barometer. Why?

Suppose water is used in a barometer instead of mercury. If the barometric pressure is 760 mm Hg , what is the height of the water column in the barometer at 0^(@) C . The densities of water and mercury at 0^(@) C are 0.99987 g cm^(-3) and 13.596 g cm^(-3) , respectively. Strategy : The prtessure exerted by a column of liquid h whose density is d is hdg . Because the pressure are equal , we can equate the expressions for water (W) and mercury (M): h_(W)d_(W)g = h_(M) d_(M)g or h_(W)d_(W) = h_(M)d_(M) Rearranging gives (h_(W))/(h_(M)) = (d_(M))/(d_(W)) This implies that the height of the liquid column in inversely proportional to its density . Solve the equation to find the height of the water column, h_(W) .

What will happen if water is used in place of mercury in a barometer tube?

Why is mercury taken in a barometer?

Suppose the pressure at the surface of mercury in as barometer tube is P_1 and the pressure at the surface of mercury in the cup is P_2 .

Calculate the atmospheric pressure , if the height of mercury column in a barometer is 760 mm