Thank you for reporting, we will resolve it shortly
Q.
The width of the diffraction band varies
JamiaJamia 2008
Solution:
Width of the diffraction band is given by $ \beta =\frac{\lambda D}{d} $ where $ D= $ distance between slit and the screen $ X= $ wavelength of light used and $ d= $ width of slit. Hence, width of the diffraction band varies directly as the distance between the slit and the screen.