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 , 11 Years ago
Grade 12
2 Answers
Saurabh Koranglekar
Last Activity: 5 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
Last Activity: 5 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.
LIVE ONLINE CLASSES
Prepraring for the competition made easy just by live online class.
Full Live Access
Study Material
Live Doubts Solving
Daily Class Assignments
Other Related Questions on engineering entrance exams