Problem: Coherent light with wavelength λ = 600 nm falls on a single thin slit and the resulting diffraction pattern is observed on a screen that is 2.0 m from the slit. The width of the central bright fringe is measured to be 4.0 mm. If the width of the slit is doubled while the wavelength of the light remains the same, the width of the central bright fringe in the diffraction pattern (a) stays the same (b) increases (c) decreases

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Problem Details

Coherent light with wavelength λ = 600 nm falls on a single thin slit and the resulting diffraction pattern is observed on a screen that is 2.0 m from the slit. The width of the central bright fringe is measured to be 4.0 mm. If the width of the slit is doubled while the wavelength of the light remains the same, the width of the central bright fringe in the diffraction pattern

(a) stays the same

(b) increases

(c) decreases

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Our tutors have indicated that to solve this problem you will need to apply the Single Slit Diffraction concept. You can view video lessons to learn Single Slit Diffraction. Or if you need more Single Slit Diffraction practice, you can also practice Single Slit Diffraction practice problems.

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Based on our data, we think this problem is relevant for Professor Curran's class at UH.