A beam of light of = 600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance between first dark fringes on either side of the central bright fringe is:
1.2 cm
1.2 mm
2.4 cm
2.4 mm
For diffraction; 1st minima is found at
or
distance between maxima on both side is
Option 1)
1.2 cm
This option is incorrect.
Option 2)
1.2 mm
This option is incorrect.
Option 3)
2.4 cm
This option is incorrect.
Option 4)
2.4 mm
This option is correct.