Question

Which has more pressure? 75 cm of mercury or column 10 m of water column? (Specific gravity of mercury is 13.6)

Answer 1

$\frac{p - hg}{p - water} = \frac{density - hg \times 75cm \times g}{density - water \times 10m \times g} = \frac{40.8}{40} > 1$

pressure of hg is more

Answer 2

Answer:

75 cm of mercury has higher pressure than the 10 m of water.

Explanation:

In the question,

We have from the formula that,

$\frac{\rho - Mercury}{\rho - Water}  =  \frac{density  - Mercury  \times 75cm \times g}{density  - water \times 10m \times g}  =  \frac{40.8}{40}$

On putting the values in this we get that,

The density of the mercury was more than the density of the water as the difference's ratio came out to be greater than 1.

Therefore, we can say that 75 cm of Mercury exerts more pressure than 10 m of Water.