A) Straight
B) Circular
C) Equally spaced
D) Having fringe spacing which increases as we go outwards
Correct Answer: A
Solution :
The cylindrical surface touches the glass plate along a line parallel to axis of cylinder. The thickness of wedge shaped film increases on both sides of this line. Locus of equal path difference are the lines running parallel to the axis of the cylinder. Hence straight fringes are obtained.You need to login to perform this action.
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