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प्रश्न
Match the following.
| Column I | Column II | |
| a) | Static friction | Viscosity |
| b) | Kinetic friction | Least friction |
| c) | Rolling friction | Objects are in motion |
| d) | Friction between the liquid layers | Objects are sliding |
| e) | Sliding friction | Objects are at rest |
उत्तर
| Column I | Column II | |
| a) | Static friction | Objects are at rest |
| b) | Kinetic friction | Objects are in motion |
| c) | Rolling friction | Least friction |
| d) | Friction between the liquid layers | Viscosity |
| e) | Sliding friction | Objects are sliding |
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