MCQOPTIONS
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| 1. |
_A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act$? |
| A. | Towards the wall at its upper end |
| B. | Away from the wall at its upper end |
| C. | Downward at its upper end |
| D. | Upward at its upper end |
| Answer» E. | |