- The central maximum will be white but the higher-order maxima will disperse into a rainbow of colors.
- The central maximum and higher-order maxima will be of equal widths.
- The lower wavelength components of light will have less diffraction compared to higher wavelength components for all maxima except the central one.
- None of the above.
This is College Physics Answers with Shaun Dychko. We have a formula here for telling us what the interference pattern will be when you have light going through several evenly-spaced parallel slits. And, <i>M</i> is the order of the constructive interference. This is the formula for the bright fringes. And <i>M</i> can be any integer. Zero, one, negative one, two, negative two, and so on. Now, if you solve this for <i>Theta</i>, you find that <i>Theta</i> is inverse sine of the order times the wavelength divided by the distance between each slit. Now, this is nonlinear, which means that <i>Theta one two</i> is going to be different than <i>Theta two three</i>. In other words, the difference between each successive angle is not going to be the same. And so, B is the answer to this question. The central maximum and higher order maxima will be of equal widths. That's not true because this angle <i>Theta</i> will change by different amounts each time you increase the order <i>M</i>.