In a single slit diffraction pattern intensity and width of fringes are

In single slit diffraction pattern :

In a single slit diffraction pattern the angular width of a central maxima is 30^(@) . When the slit is illuminated by light of wavelength 6000Å . Then width of the slit will be approximately given as :

In a single slit diffraction pattern, distance between the slit and the screen is doubled. Will there be any change in the angular separation between the fringes of pattern?

In a diffraction pattern the width of any fringe is

In a diffraction pattern the width of any fringe is

In a single slt diffraction pattern,how is the width of cetral bright maximum changed,when teh slit width is decreased,