A Single Slit of Width a Is Illuminated by Light

question 15

Multiple Choice

A single slit of width a is illuminated by light of wavelength λ. If a = 4.3λ, the maximum number of dark fringes on a semi-circular screen surrounding the slit is

• A) 2.
• B) 4.
• C) 6.
• D) 8.
• E) 9.

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