Physics 9702 · AS & A Level · Diffraction

Diffraction — practice question

Water waves with wavelength $\lambda$ undergo diffraction when they travel through a barrier opening of width $d$. Which pairing of wavelength and gap width would give the largest diffraction angle?

  • Agap width $= \frac{1}{2} d$, wavelength $= 2\lambda$
  • Bgap width $= \frac{1}{2} d$, wavelength $= \frac{1}{2} \lambda$
  • Cgap width $= 2d$, wavelength $= 2\lambda$
  • Dgap width $= 2d$, wavelength $= \frac{1}{2} \lambda$

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