Two soap bubbles have different radii but their surface tension i… - Vidyadip

MCQ

Two soap bubbles have different radii but their surface tension is the same. Mark the correct statement

✓
Internal pressure of the smaller bubble is higher than the internal pressure of the larger bubble
B
Pressure of the larger bubble is higher than the smaller bubble
C
Both bubbles have the same internal pressure
D
None of the above

✓

Answer

Correct option: A.

Internal pressure of the smaller bubble is higher than the internal pressure of the larger bubble

(a)$\Delta P=\frac{4 T}{R} \therefore \Delta P \propto \frac{1}{R} \quad(T=\text { constant })$Hence, the internal pressure of smaller bubble is larger than that of larger bubble.

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