A monochromatic beam of light falls on YDSE apparatus at some angle (say θ θ ) as shown in figure. A thin sheet of glass is inserted in front of the lower slit S 2 . The central bright fringe (path difference = 0) will be obtained
Text Solution
Verified by ExpertsThe correct answer is:
D
If 
central fringe is obtained at O
If 
central fringe is obtained above O and
If 
central fringe is obtained below O .
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