Physics · May / June 2016 · Paper 12 · Question 16

The diagram shows the inside of a refrigerator. [diagram: refrigerator with cooling unit] When the refrigerator is first switched on, what happens to the air near the cooling unit?

1. Athe particles of this air become smaller; the density of this air decreases
2. Bthe particles of this air become smaller; the density of this air increases
3. Cthe particles of this air move closer together; the density of this air decreases
4. Dthe particles of this air move closer together; the density of this air increases

As printed in the paper