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Question
A parallel beam of monochromatic light falls normally on a single narrow slit. The angular width of the central maximum in the resulting diffraction pattern ______
Options
decreases with the decrease of slitwidth
decreases with the increase of slitwidth
increase with the increase of slitwidth
may increase or decrease
MCQ
Fill in the Blanks
Solution
A parallel beam of monochromatic light falls normally on a single narrow slit. The angular width of the central maximum in the resulting diffraction pattern decreases with the increase of slitwidth.
Explanation:
X = `(2lambdaD)/a`, X will decrease if a increases
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Diffraction of Light
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