Diffraction (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is diffraction?
What is diffraction?
Spreading of waves through gaps/obstacles
When does the greatest diffraction occur?
When does the greatest diffraction occur?
When gap size wavelength
What happens when the gap is smaller than the wavelength?
What happens when the gap is smaller than the wavelength?
Most waves are reflected
How wide is the central bright fringe compared to other fringes in single-slit diffraction?
How wide is the central bright fringe compared to other fringes in single-slit diffraction?
Twice as wide
What causes the dark fringes in a diffraction pattern?
What causes the dark fringes in a diffraction pattern?
Destructive interference
In white light diffraction, which colour appears closer to the central maximum?
In white light diffraction, which colour appears closer to the central maximum?
Violet
What effect does a narrower slit have on the central maximum?
What effect does a narrower slit have on the central maximum?
Wider but lower intensity
What is the effect of using a longer wavelength on the central maximum?
What is the effect of using a longer wavelength on the central maximum?
Wider central maximum
In , what does represent?
In , what does represent?
Distance between slits
How are diffraction gratings used in astronomy?
How are diffraction gratings used in astronomy?
To analyse absorption spectra from stars