If the excess pressure inside a spherical soap bubble of radius 1 cm is balanced by that due to column of oil of specific gravity 0.9, height 1.36 mm. Calculate the value of surface tension of soap solution.

Explanation

To solve the problem, we need to calculate the surface tension of the soap solution using the given parameters. Here’s a step-by-step solution:

### Step 1: Understand the relationship between excess pressure and surface tension
The excess pressure \( P \) inside a soap bubble is given by the formula:
\[ P = \frac{4S}{R} \]
where \( S \) is the surface tension and \( R \) is the radius of the bubble.
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