Cameroon GCE A-Level Physics case studies
Cameroon GCE A-Level Physics · Put your knowledge to work in context.
The Cameroon GCE A-Level Physics is an advanced school-leaving qualification awarded through the Cameroon General Certificate of Education Board. It is taken by students who have completed the two-year Advanced Level course in a secondary school or as private candidates, and it serves as the main evidence of physics competence for university admission, teacher-training entry, and technical or laboratory employment. The Cameroon GCE A-Level Physics case studies are 5 cases and about 3,907 words.
1Block on a Rough Incline: Does the System Move at All?
A 4.0 kg wooden block on a rough plane inclined at 25° to the horizontal is joined by a light string, passing over a small pulley at the top of the plane, to a 2.5 kg mass hanging freely. The coefficients of friction between block and plane are μs = 0.45 and μk = 0.35.
775 words, about 4 min2Resolving the Sodium Doublet: Which Order, and Is the Grating at Fault?
A student uses a plane transmission grating marked '500 lines per mm' and 10 mm wide to try to resolve the sodium doublet at 589.0 nm and 589.6 nm. A collimator produces a parallel beam that falls on the full width of the grating, and the diffracted light is observed through a telescope.
785 words, about 4 min3A Frost Alarm That Cannot Work: Loading a Potential Divider with a Relay Coil
A student is building a frost alarm. The sensor is an NTC thermistor whose resistance is 1000 Ω at 25 °C, 700 Ω at 40 °C and 470 Ω at 46 °C.
828 words, about 4 min4Specific Heat Capacity of Aluminium: Random Error or Systematic?
In a specific-heat-capacity experiment, a 1.000 kg aluminium block has a 12.0 V, 2.00 A electrical heater and a thermometer embedded in it, and is wrapped in insulation. In run A the heater is switched on for 480 s and the temperature rises from 18.0 °C to 29.9 °C.
789 words, about 4 min5Photoelectric Effect: Is the Zinc Specimen Faulty, or the Tube?
A student is given a two-electrode photocell whose cathode is zinc. The manufacturer states that the work function of the zinc cathode is 4.30 eV; the collector electrode is a different metal whose surface is tarnished and not identified.
730 words, about 4 min