Edexcel IGCSE Physics 3.21 Critical Angle Topic Practice

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Pearson Edexcel International GCSE Physics

1 Forces and motion

(b) Movement and position

(c) Forces, movement, shape and momentum

(b) Mains electricity

(c) Energy and voltage in circuits

(d) Electric charge

(b) Properties of waves

(c) The electromagnetic spectrum

(d) Light and sound

3.14 Light waves

3.15 Law of reflection

3.16 Ray diagrams

3.17 Refraction practical

3.18 Refractive index equation

3.19 Glass refractive index practical

3.20 Total internal reflection

3.21 Critical angle

3.22 Critical angle equation

3.23 Sound waves

3.24P Human hearing range

3.25P Speed of sound practical

3.26P Oscilloscope and microphone

3.27P Sound frequency practical

3.28P Pitch and frequency

3.29P Loudness and amplitude

4 Energy resources and energy transfers

(b) Energy transfers

(c) Work and power

(d) Energy resources and electricity generation

5 Solids, liquids and gases

(b) Density and pressure

(c) Change of state

(d) Ideal gas molecules

6 Magnetism and electromagnetism

(c) Electromagnetism

(d) Electromagnetic induction

7 Radioactivity and particles

(b) Radioactivity

(c) Fission and fusion

(b) Motion in the universe

(c) Stellar evolution

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