The angular width of the central maximum in a single slit diffraction pattern is . The width of the slit is 1 μm. The slit is illuminated by monochromatic plane waves. If another slit of same width is made near it, Young’s fringes can be observed on a screen placed at a distance 50 cm from the slits. If the observed fringe width is 1 cm, what is slit separation distance ?
(i.e. distance between the centres of each slit.)
100 μm
25 μm
50 μm
75 μm
As we learnt that
Fraunhofer Diffraction -
- wherein
Condition of nth minima.
slit width
angle of deviation
Option 1)
100 μm
Option 2)
25 μm
Option 3)
50 μm
Option 4)
75 μm
Study 40% syllabus and score up to 100% marks in JEE