An isolated and charged spherical soap bubble has a radius 'r' and the pressure inside is atmospheric. If 'T' is the surface tension of soap solution, then charge on drop is –
A
B
8πr 
C
8πr 
D
8πr 
Text Solution
Verified by ExpertsThe correct answer is:
B
Inside pressure must be 
greater than outside pressure in bubble. This excess pressure is provided by charge on bubble.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
The law, governing the force between electric charges is known as
When the distance between the charged particles is halved, the force between them becomes
There are two charges +1 microcoulombs and +5 microcoulombs. The ratio of the forces acting on them…
A charge q 1 exerts some force on a second charge q 2 . If third charge q 3 is brought near, the fo…
and represents gravitational and electrostatic force respectively between electrons situated at a…
The ratio of the forces between two small spheres with constant charge in air in a medium of diel…