A researcher uses a single slit diffraction pattern to evaluate a patient's vision. Which of the following changes will decrease the spacing of the diffraction pattern?A.Decreasing the width of the slitB.Decreasing the wavelength of the lightC.Increasing the wavelength of the lightD.Increasing the intensity of the lightSubmit
Question
A researcher uses a single slit diffraction pattern to evaluate a patient's vision. Which of the following changes will decrease the spacing of the diffraction pattern?A.Decreasing the width of the slitB.Decreasing the wavelength of the lightC.Increasing the wavelength of the lightD.Increasing the intensity of the lightSubmit
Solution
The spacing of a diffraction pattern is determined by the equation θ = λ / b, where θ is the angle of diffraction, λ is the wavelength of light, and b is the width of the slit.
A. Decreasing the width of the slit (b) would increase the angle of diffraction (θ), which would increase the spacing of the diffraction pattern. So, this option would not decrease the spacing.
B. Decreasing the wavelength of the light (λ) would decrease the angle of diffraction (θ), which would decrease the spacing of the diffraction pattern. So, this option would decrease the spacing.
C. Increasing the wavelength of the light (λ) would increase the angle of diffraction (θ), which would increase the spacing of the diffraction pattern. So, this option would not decrease the spacing.
D. The intensity of the light does not affect the spacing of the diffraction pattern, it only affects the brightness. So, this option would not decrease the spacing.
Therefore, the correct answer is B. Decreasing the wavelength of the light.
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