OCR AS level Physics: The Photoelectric Effect

OCR AS level Physics: Quantum Physics

OCR AS level Physics presentations for module 4: Quantum Physics. All presentations are full lesson PowerPoints with worked examples and homeworks with complete worked answers. The Photon Model * Energy of a single photon * Converting from electron-volts to Joules. * Frequency of the electromagnetic spectrum * Determining Plank’s constant with LEDs * Threshold potential difference difference Photoelectric Effect * Threshold frequency * Producing photoelectrons * Kinetic energy of photoelectrons * Linking frequency and wavelength * The electromagnetic spectrum, frequency and energy. Einstein's Photoelectric Equation * The photoelectric equation * Work function and Kinetic Energy * Determining work function from a graph * Determining threshold frequency from a from graphical analysis. * Determining Plank’s constant from graphical analysis. Wave Particle Duality * deBroglie wavelength equation * Diffraction of electrons and protons * Comparing wavelengths of particles with different masses * Kinetic energy and wavelength