O-LevelPhysicsThermal PhysicsOct/Nov 2025Paper 3 Q210 Marks
In this experiment, you will investigate the absorption of thermal radiation by different coloured surfaces. You are provided with: • a lamp connected to a power supply • a thermometer with a piece of white card attached to its bulb • a thermometer with a piece of black card attached to its bulb • a clamp, boss and stand • a stopwatch • a 30 cm ruler. The supervisor has arranged the thermometer which has a piece of white card attached to its bulb so that the bulb is level with the filament of a lamp. The lamp is switched off. [Figure 2.1]
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