Physics WPH13/01 October 2020 | Edexcel International AS Level Past Papers With Mark Scheme

Edexcel International AS/A Level Physics (WPH) Oct 2020

معلم موافق رایگان بودن است.

1. oil viscosity vs temperature—flow time measurement, digital vs glass thermometer accuracy, control of oil volume, timing method improvement
2. LED intensity vs voltage—threshold voltage identification, energy transfer calculation, Planck constant estimation using photon wavelength, monochromatic light limitation, p.d. uncertainty reduction
3. solar cell power vs temperature—circuit setup, maintaining light intensity, heating methods, power and efficiency calculation, graphical method to find ΔP/ΔT
4. frictional force vs normal contact force—experiment with rubber on concrete, F = μN application, data plotting, μ determination from gradient, tyre safety testing relevance
5. light-meter shielding, digital instrument precision, consistency in control variables, rate of flow refinement using repeated trials and smaller volumes
6. de Broglie wavelength, photoelectric effect, Planck relation E = hf, linear regression for μ, error analysis and apparatus precision