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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 |
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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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