Answer:
The central maximum broadens.
Explanation:
In the diffraction pattern in a single slit diffraction experiment. The position of maxima is given by :
[tex]y=\dfrac{m\lambda D}{d}[/tex]
Where
m is the order
D is the distance between slit and the screen
d is the slit width
It is clear that on increasing the wavelength in a single slit, the central maximum broadens. Hence, the correct option is (A).
