A Single Slit Forms a Diffraction Pattern,with the First Minimum

question 27

Multiple Choice

A single slit forms a diffraction pattern,with the first minimum at an angle of 40° from central maximum.Monochromatic light of 410 nm wavelength is used.The same slit,illuminated by a different monochromatic light source,produces a diffraction pattern with the second minimum at a 60° angle from the central maximum.The wavelength of this light,in nm,is closest to:

• A)276
• B)293
• C)309
• D)326
• E)342

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