Whether a liquid spreads or forms droplets is decided by the:
AWeight of droplet
BColour of solid
CAngle of contact
DVolume of liquid
Answer & Solution
Correct answer: C. Angle of contact
1. The angle of contact differs for each pair of liquid and solid.
2. A small angle lets the liquid spread over the solid.
3. A large one makes it gather into droplets instead.
_Source: NCERT Class 11 Physics Part II, Chapter 10, Mechanical Properties of Fluids._
Related questions
Waterproofing agents are added to create a large:Detergents and dying substances act as:The pressure inside a spherical drop, against that outside, is:For a given volume the least surface area belongs to a:Free liquid drops and bubbles are spherical if we neglect:The hair of a paint brush forms a fine tip when it is:Sap and water rise up to the top of the leaves of a:Oil climbs up a cotton wick in spite of: