Properties of Charges: Practice Problem & Solution

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Properties of Charges. Understanding the underlying formula is key to arriving at the correct answer below:

The excess pressure inside a soap bubble is \(\Delta P = \frac{4T}{r}\). When it contracts, its radius \(r\) decreases, leading to an increase in the excess pressure, hence the total internal pressure increases.