Diffraction strength from gap size
Water waves in a concert hall acoustics test have wavelength \(0.9\,\text{cm}\) and pass through a gap of width \(0.65\,\text{cm}\). Calculate the ratio \(a/\lambda\). Enter the numerical result and choose the interpretation that matches the wave physics.
Worked practice: physics data and result
Read the physical quantities first, then calculate the result and state what it means.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.