Question 1 · 1 mark · Foundation · Practical · Diagnostic
Interactive practical
Interference: Young's slits and diffraction gratings
Measure double-slit fringes and matching diffraction orders, then determine and compare the wavelength of laser light using two methods.
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Eduqas A420QS — this practical matches your selected course; the questions check the method, data handling and practical skills.
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Question 2 · 3 marks · Standard · Practical · Practical method