In YDSE, the source placed symmetrically with respect to the slit is now moved parallel to the p...

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In YDSE, the source placed symmetrically with respect to the slit is now moved parallel to the plane of the slits so that it is closer to the upper slit, as shown. Then,
(a) The fringe width will increase and fringe pattern will shift down.
(b) The fringe width will remain same but fringe pattern will shift up.
(c) The fringe width will decrease and fringe pattern will shift down.
(d) The fringe width will remain same but fringe pattern will shift down.
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