Q)
(chatquestion)...20. The angular width of the central maximum in a single slit diffraction pattern is 60°. The
width of the slit is 1 um. 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 of 50 cm from the slits. If the observed fringe width is 1 cm, what is slit separation
distance ?
(Le. distance between the centres of each slit.)
(1) 75yum
(2) 100um
(3) 25µm
(4) 50 um
1 Answer
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