Optics 6 Question 33
35. While conducting the Young’s double slit experiment, a student replaced the two slits with a large opaque plate in the plane containing two small holes that act as two coherent point sources emitting light of wavelength . The student mistakenly placed the screen parallel to the plane (for ) at a distance from the mid-point of , as shown schematically in the figure. The distance between the source . The origin is at the intersection of the screen and the line joining . (2016 Adv.)
Which of the following is (are) true of the intensity pattern on the screen?
(a) Semi circular bright and dark bands centered at point
(b) The region very close to the point
(c) Straight bright and dark bands parallel to the
(d) Hyperbolic bright and dark bands with foci symmetrically placed about
Show Answer
Solution:
Path difference at point
This path difference is equal to
Line