Why should detergents have small angles of contact?

1.	Why should detergents have small angles of contact?
Answer» Since, Capillary rise = h = 2TCos/rPg i.e. h is directly dependent on θ (Angle of contact) Now If θ→ Small then Cos θ is large and if detergents should have smaller angle of contact then detergent will pentrate more in the cloth and clean better.

Answer»

Since, Capillary rise = h = 2TCos/rPg

i.e. h is directly dependent on θ (Angle of contact)

Now If θ→ Small then Cos θ is large and if detergents should have smaller angle of contact then detergent will pentrate more in the cloth and clean better.

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Why should detergents have small angles of contact?

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