Textbook ExpertVerified Tutor
5 Dec 2021
Given information
slit width
Angle at which parallel light falls on slit.
Step-by-step explanation
Step 1.
When the parallel light makes angle or when the parallel rays are perpendicular to screen on which fringes are obtained , central fringe is formed in front of
the slit . Its width is twice the width of a single fringe.
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