O-LevelPhysicsThermal Physics5054/11 · May/June 2025 · Q171 Mark
A sample of water in a beaker is at a temperature T. The surface area of the water is A and an electric fan blows air across the top of the beaker at a speed v. For which values of T, A and v does the water evaporate the most rapidly?
AT/°C: 18, A/cm²: 45, v/m/s: 0.1
BT/°C: 24, A/cm²: 50, v/m/s: 1.9
CT/°C: 38, A/cm²: 70, v/m/s: 5.0
DT/°C: 38, A/cm²: 45, v/m/s: 4.7
✓ Correct answer
C: T/°C: 38, A/cm²: 70, v/m/s: 5.0
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Thermal Physics and see which topics are most likely to come up next.
Sign up free →