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.
Open interactive simulationPractice: Wavelength using a diffraction grating
WJEC 1420QS — this practical matches your selected course; the questions check the method, data handling and practical skills.
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2 of 2 available questions match the selected filters. This session contains 2 questions.
Question 2 · 3 marks · Standard · Practical · Practical method