alleryWater placed on a clean plastic plate:
ASpreads over it
BForms droplets
CRolls straight off
DStays as a ball
Answer & Solution
Correct answer: A. Spreads over it
1. Here the liquid is strongly attracted to the solid.
2. The angle of contact is small in this case.
3. So the water spreads over the plate.
_Source: syllabus Physics Part II, Chapter 10, Mechanical Properties of Fluids._
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