Friction is increased if
- Aan oil is sprayed
- Bthe surfaces are made wet
- ✓the surfaces are made dry
- Dthe surfaces are polished
Answer: C.
View full solution →153 questions across 8 question groups — pick any mix to generate a PHYSICS paper with step-by-step answer keys.
MCQ
16 Q→02[1 Mark Question Answer]
67 Q→03[2 Mark Question Answer]
13 Q→04[3 Mark Question Answer]
8 Q→05[5 Mark Question Answer]
4 Q→06fill in the blanks.
22 Q→07TRUE / FALSE
20 Q→08Match the following.
3 Q→One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Answer: C.
View full solution →Answer: D.
View full solution →Answer: A.
View full solution →Answer: B.
View full solution →Answer: C.
View full solution →| Column A | Column B |
| a) Non contact force | 1) repel |
| b) Like poles | 2) kg |
| c) Contact force | 3) gravitational force |
| d) Mass | 4) force of friction |
| Column A | Column B |
| 1. Non-contact forces | a. perpendicular to surface |
| 2. Catapult | b. an act of push or pull |
| 3. Force | c. contact force |
| 4. Normal force | d. action-at-a-distance forces |
| Column A | Column B |
| 1. Rolling friction | a. making grooved designs |
| 2. Static friction | b. regular oiling |
| 3. Reducing friction | c. a book placed on a tabletop |
| 4. Increasing Friction | d. wheels of a car |
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