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A drop of liquid pressed between two gla...

A drop of liquid pressed between two glass plates spreads to a circle of diameter 10 cm. Thickness of the liquid film is 0.5 mm and surface tension is `70xx10^(-3)Nm^(-1)` the force required to pull them apart is

A

4.4 N

B

1.1N

C

2.2 N

D

3.6 N

Text Solution

Verified by Experts

The correct Answer is:
C
`F=(2TA)/(d)`
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