Answer
contracts
Work Step by Step
Increasing the frequency of the light will result in larger values of the wavelength.
For a single slit experiment :
$\alpha \sin \theta = m \lambda $ where $m=1,2,3,....$ (minima)
We can see that the wavelength, $\lambda$, and the angles to the minima, $\theta$, are inversely proportional. Increasing the wavelength will decrease the angles to the minima, resulting in a tighter, more contracted pattern.
