In the variable pressure head method of determining the coefficient of viscosity, the heleht of water above the axis of capillary tube before and after the experiment was 45 cm and 55 em respectively. A capillary tube of length 10 cm and diameter 0-4 mm was used. Calculate the coefficient of viscosity of water if the volume of water collected per minute is `1.86 x 10^(-6)m^(3)`

Explanation

To calculate the coefficient of viscosity of water using the variable pressure head method, we can follow these steps:

### Step 1: Identify Given Values
- Height of water before the experiment (h1) = 55 cm = 0.55 m
- Height of water after the experiment (h2) = 45 cm = 0.45 m
- Length of capillary tube (L) = 10 cm = 0.1 m
- Diameter of capillary tube (d) = 0.4 mm = 0.0004 m
- Volume of water collected per minute (V) = 1.86 x 10^(-6) m³/min
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