Exam-style question
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Which of the following best describes the effect of increasing the wavelength on the diffraction pattern?.
- A.The pattern becomes narrower.
- B.The pattern remains unchanged.
- C.The pattern becomes wider.
- D.The pattern disappears.
Model answer
What a good answer should say
- The pattern becomes wider.
Explanation
Why this works
Increasing the wavelength of the waves results in a wider diffraction pattern, as the angle of diffraction increases, leading to more pronounced spreading of the waves.
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