Properties Of Solids And Liquids Question 325
Question: Two soap bubbles have different radii but their surface tension is the same. Mark the correct statement [MP PMT 2004]
Options:
A) 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
Show Answer
Answer:
Correct Answer: A
Solution:
$ \Delta P=\frac{4T}{R} $
$ \Delta P\propto \frac{1}{R} $ (T = constant).
Hence, the internal pressure of smaller bubble is larger than that of larger bubble.
