McqMate
| Q. |
A falling drop of rain water ac-quires the spherical shape due to – |
| A. | Viscosity |
| B. | Surface Tension |
| C. | Atmospheric pressure |
| D. | Gravitational force |
| Answer» B. Surface Tension | |
|
Explanation: Raindrops start out as round high in the atmosphere as water collects on dust and smoke particles in clouds. But as raindrops fall, they lose their rounded shape. A raindrop falling through the atmosphere forms as a roughly spherical structure due to the surface tension of water. This surface tension is the "skin" of a body of water that makes the molecules stick together. The cause is the weak hydrogen bonds that occur between water molecules. |
|
View all MCQs in
PhysicsNo comments yet