At a given place, a mercury barometer records a pressure of 0.70 m of Hg. What would be the height of water column if mercury in barometer is replaced by water? Take R.D. of mercury = 13.6.

Explanation

To solve the problem of finding the height of the water column when the mercury in the barometer is replaced by water, we can follow these steps:

### Step 1: Understand the relationship between pressure, height, and density
The pressure at a certain height in a fluid can be expressed using the formula:
\[ P = h \cdot \rho \cdot g \]
where:
- \( P \) = pressure (in Pascals)
- \( h \) = height of the fluid column (in meters)
...