In wedge shaped film the interference pattern has nature
(a) Parallel to the end where thickness is non-zero
(b) Perpendicular to contact edge
(c) Parallel to contact edge
(d) Perpendicular to the end where thickness is non-zero
(a) Parallel to the end where thickness is non-zero
(b) Perpendicular to contact edge
(c) Parallel to contact edge
(d) Perpendicular to the end where thickness is non-zero