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Question

Which letter represents the zeroth order fringe in Young's double slit interference?
479999_085daf03e00145a290b0ed369d14470b.png

A
A
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B
B
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C
C
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D
D
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E
E
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Solution

The correct option is B B
Zeroth order fringe or central maxima always forms at the point where path difference is zero.
From figure, the path difference is zero at point B. Thus letter B represents the zeroth order fringe.

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