Physics (AS & A Level) · Feb / March 2019 · Paper 12 · Question 29

A diffraction grating experiment is set up using orange light of wavelength 600 nm. The grating has a slit separation of 2.00 µm. What is the angular separation (θ₂ – θ₁) between the first and second order maxima of the orange light?

1. A17.5°
2. B19.4°
3. C36.9°
4. D54.3°

As printed in the paper