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Two vertical parallel glass plates are partically submerged in water. The distance between the plates is `d=0.10mm`, and their width is `l=12cm` assuming that the water between the plates does not reach the upper edges of the plates and the wetting is complete. Find the force of their mutual attraction

A

13 N

B

26 N

C

39 N

D

6.5 N

Text Solution

Verified by Experts

The correct Answer is:
A
`(drhog)A=Tl,A=(Tl)/(drhog)`
`F=(2T)/(d)A=(2T)/(d)xx(Tl)/(drhog)` or `F=(2T^(2)l)/(d^(2)rhog)`
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