Question

A mixture of light with wavelength 540 nm and light with wavelength 400 nm is aimed at a pair of slits to produce a double-slit interference pattern. Which of these will be true?

The pattern will be the same for both wavelengths.

The central maximum will be at the same position for both, but the first maximum to each side will be at different locations.

The central maximum and the first maximum to each side will be at different locations, but the other maxima will be the same.

Both the central maximum and all the maxima on each side will be different.