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A single slit is illuminated by light of...

 A single slit is illuminated by light of wavelength `lambda_(1)` and `lambda_(2)`. so chosen that the first diffraction minimum of the`lambda_(1)` component coincides with the second minimum of the `lambda_(2)` component. (a) What relationship exists between the two wavelengths? (b) Do any other minima in the two diffraction pattern coincide?

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