A-LevelPhysicsSuperposition9702/12 · Oct/Nov 2013 · Q281 Mark
Light of wavelength λ passes through a diffraction grating with slit spacing d. A series of lines is observed on a screen. [Figure 28.1] What is the angle α between the two first order lines?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Asin⁻¹(λ / 2d)
Bsin⁻¹(λ / d)
C2 sin⁻¹(λ / 2d)
D2 sin⁻¹(λ / d)
✓ Correct answer
D: 2 sin⁻¹(λ / d)
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Superposition and see which topics are most likely to come up next.
Sign up free →