A thin film of liquid is trapped between two glass plates. The force required to pull the plates apart will increase if the
A
surface tension of the liquid is reduced
B
perpendicular distance between the plates is increased
C
area of the liquid surface in contact with the plates is increased
D
pressure of the air is decreased
Verified Correct Answer: C.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #28316)