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WAEC Physics 2013 Paper
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Question : 44
Total: 46
The outlet of a bicycle pump is used to inflate a football as illustrated in the diagram above. Why does the pressure of the air inside the pump increases as the pump handle is slowly pushed downward at constant temperature?
momentum of the air molecules are increased
volume occupied by the molecules are increased
frequency of collision of the air molecules with the walls of the pump is increased
more air molecules are collidin with one another in the system
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