CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

A soap bubble of radius R is surrounded by another soap bubble of radius 2R, as shown. Take surface tension =S. Then the pressure inside the smaller soap bubble, in excess of the atmospheric pressure, will be


Your Answer
A
4SR
Your Answer
B
3SR
Correct Answer
C
6SR
Your Answer
D
None of these 

Solution

The correct option is C 6SR
Let, P0 be the atmosphere pressure 
P1= pressure inside the soap bubble of radius 2R
P2 = pressure inside the soap bubble of radius R
Excess in pressure for soap bubble of radius 2R
P1P0=4S2R.....(1)
Excess in pressure for soap bubble of radius R
P2P1=4SR.....(2)
Add (1) and (2),
P1P0+P2P1=4S2R+4SR
=4S+8S2R
P2P0=6SR

flag
 Suggest corrections
thumbs-up
 
0 Upvotes


Similar questions
View More


People also searched for
View More



footer-image