Each fringe in the pattern is produced by the interference of light rays reflected from sections of the wedge having same thickness.The locus of points having the same thickness lies along lines parallel to the contact edge.So fringes are straight.
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Yes a wedge is an incline plane.
It is the length of the sloped side of the wedge divided by its width.
yes, because a doorstop wedges the door. So it would be a wedge.
While a wedge and an inclined plane are not the same things, a wedge is a type of inclined plane. However, not all inclined planes are considered to be wedges.
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