In a double-slit experiment, when particles or waves pass through two narrow slits and create an interference pattern on a screen, the interference pattern is influenced by the wavelength of the particles or waves involved.
If the wavelength of the particles or waves is changed, it would have an impact on the resulting interference pattern. The interference pattern is created by the constructive and destructive interference of the waves from the two slits.
If the wavelength is increased, meaning the particles or waves have a longer wavelength, the spacing between the interference fringes will decrease. This is because the distance between adjacent peaks or troughs of the waves is larger, resulting in a wider spacing between the bright and dark fringes on the screen.
Conversely, if the wavelength is decreased, meaning the particles or waves have a shorter wavelength, the spacing between the interference fringes will increase. This is because the distance between adjacent peaks or troughs of the waves is smaller, resulting in a narrower spacing between the bright and dark fringes on the screen.
Therefore, changing the wavelength of the particles or waves in a double-slit experiment will directly affect the pattern of interference observed on the screen.