Question

The force required to separate two glass plates of area

10–3 m2 with a film of water 0.05 mm thick between them,

is (the surface tension of water is 70 X 10-3 N/m)

A) 28 N

B) 50 N

C) 14 N

D) 38 N.


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Answer 1

Answer:

28 N is the answer for the above sum