Physics · May / June 2020 · Paper 12 · Question 28
5054Particle model
The air in a sealed can is heated. Which statement explains the increase in pressure inside the can?
- AThe molecules collide with the walls of the can more frequently when the air is heated.
- BThe mass of the molecules is greater when the air is heated.
- CThere are more molecules per unit volume when the air is heated.
- DThe separation of molecules becomes greater when the air is heated.
As printed in the paper
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Correct answer: A. The molecules collide with the walls of the can more frequently when the air is heated.
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