Water rises in a capillary tube upto a certain height such that the upward force of surface tension balances the force of `75 xx 10^(-5)N` due to weight of the liquid. If surface tension of water is ` 6 xx 10^(-2)Nm^(-1)`, what must be the internal circumference of the capillary tube?

Explanation

To solve the problem, we need to find the internal circumference of the capillary tube based on the given data about the upward force due to surface tension and the surface tension of water.

### Step-by-Step Solution:

1. **Identify the Given Data:**
- Upward force due to surface tension, \( F = 75 \times 10^{-5} \, \text{N} \)
- Surface tension of water, \( \gamma = 6 \times 10^{-2} \, \text{N/m} \)

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