Step 4 of 4 · topic
Waves
Eduqas A420QS — matched to your course.
Phase, interference, diffraction, stationary waves and polarisation.
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Intensity variation with polarisation
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Subtopics and study areas
- Measure transmitted intensity as the relative angle between polarisers changes.
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Interference: Young's slits and diffraction gratings
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Subtopics and study areas
- Measure interference or diffraction patterns and use geometry to determine wavelength.
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Measuring refractive index
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Subtopics and study areas
- Measure incidence and refraction angles and determine refractive index from Snell's law.
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Speed of sound from stationary waves
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Subtopics and study areas
- Form stationary sound waves, measure wavelength and calculate the speed of sound.
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Wavelength using a diffraction grating
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Subtopics and study areas
- Use diffraction-order angles and grating spacing to determine the wavelength of monochromatic light.
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Waves
Revision notes are free. Premium unlocks the full question and retrieval-card bank.
Subtopics and study areas
- Relate phase difference to path difference.
- Analyse interference and stationary waves.
- Apply diffraction-grating and polarisation concepts.
