A sheet can be made water proof by coating it with a substance that changes the angle of contact
(a) To ^/2
(b) To zero
(c) From acute to obtuse
(d) From obtuse to acute
Abhishek
12 Years agoGrade 12
2 Answers
Saurabh Koranglekar
6 Years ago
If the clothes are sprayed with waterproofing agent, then itchanges the angle of contact from acute to obtuse, in this way, water beads up on the surface and does not easily penetrate the clothing.
Vikas TU
6 Years ago
If the clothes are sprayed with waterproofing agent, then it changes the angle of contact from acute to obtuse, in this way, water beads up on the surface and does not easily penetrate the clothing.
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