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Unit 1: Mechanics and Materials

1.3 - Mechanics

1.4 - Materials

Unit 2: Waves and Electricity

2.3 - Waves and Particle Nature of Light

2.3.33 - Wave quantities

2.3.34 - Wave equation

2.3.35 - Longitudinal waves

2.3.36 - Transverse waves

2.3.37 - Wave graphs

2.3.38 - Core Practical 4 - speed of sound in air

2.3.39 - Wavefronts, coherence and interference

2.3.40 - Phase difference and path difference

2.3.41 - Standing waves, nodes and antinodes

2.3.42 - Speed of a transverse wave on a string

2.3.43 - Core Practical 5 - vibrating string frequency

2.3.44 - Intensity of radiation

2.3.45 - Refraction at a boundary

2.3.46 - Critical angle

2.3.47 - Total internal reflection

2.3.48 - Measuring refractive index

2.3.49 - Plane polarisation

2.3.50 - Diffraction and Huygens’ construction

2.3.51 - Diffraction grating equation

2.3.52 - Core Practical 6 - wavelength using diffraction grating

2.3.53 - Electron diffraction evidence

2.3.54 - De Broglie wavelength

2.3.55 - Transmission and reflection at boundaries

2.3.56 - Pulse-echo techniques

2.3.57 - Wave and photon models of EM radiation

2.3.58 - Photon energy

2.3.59 - Photon absorption and photoelectron emission

2.3.60 - Threshold frequency and work function

2.3.61 - Electronvolt

2.3.62 - Photoelectric effect evidence

2.3.63 - Atomic line spectra and energy levels

2.4 - Electric Circuits

Unit 3: Practical Skills in Physics I

3.4 - Implementation and measurements

3.5 - Processing Results

A-Level Edexcel Physics AS 2.3.35 - Longitudinal waves Topic Practice

2.3.35 - Longitudinal waves

• 35 be able to describe longitudinal waves in terms of pressure variation and the displacement of molecules.

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