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

A drop of liquid pressed between two glass plates spreads to a circle

1.	A drop of liquid pressed between two glass plates spreads to a circle of diameter 10cm. Thickness of liquid film is 0.5mm and coefficient of surface tension is 70 xx 10^(-3) "Nm"^(-1). The force required to pull them a part is
Answer» `4.4 N` `1.1 N` `2.2 N` `2.6 N` ANSWER :C