Question
Question: A soap bubble formed at the end of the tube is blown very slowly. The graph between excess of pressu...
A soap bubble formed at the end of the tube is blown very slowly. The graph between excess of pressure inside the bubble with time is
A
B
C
D
Answer
Explanation
Solution
As excess pressure inside the soap bubble of radius r, is
or 
Therefore as r increase with time, P decreases so the variation of P with time t will be a parabolic curve as shown is option. (2)