Exam-style question
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When light passes through a narrow slit, which of the following factors will increase the amount of diffraction observed?.
- A.Increasing the slit width.
- B.Decreasing the wavelength of light.
- C.Increasing the wavelength of light.
- D.Decreasing the distance from the slit to the screen.
Model answer
What a good answer should say
- Increasing the wavelength of light.
Explanation
Why this works
Increasing the wavelength of light enhances the diffraction effect, causing the light waves to spread out more after passing through the slit.
Common mistake
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