O-LevelPhysicsThermal PhysicsOct/Nov 2023Paper 2 Q55 Marks
Fig. 5.1 shows a device that cools the air in a room by evaporation. [Figure 5.1] Water drips from the container into the sponge block and keeps it wet. Air flows in through one grille and out through the other. As the air flows through the wet sponge block, the water in the sponge block evaporates.
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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