Question

While conducting the Young’s double slit experiment, a student replaced the two slits with a large opaque
plate in the x-y plane containing two small holes that act as two coherent point sources (S₁, S₂) emitting
light of wavelength 600 nm. The student mistakenly placed the screen parallel to the x-z plane (for z > 0) at
a distance D = 3 m from the mid-point of S₁ S₂, as shown schematically in the figure. The distance between
the sources d = 0.6003 mm. The origin O is at the intersection of the screen and the line joining S₁ S₂. which
of the following is(are) true of the intensity pattern on the screen?
(A) Hyperbolic bright and dark bands with foci symmetrically placed about O in the x-direction
(B) Semi circular bright and dark bands centred at point O
(C) The region very close to the point O will be dark
(D) Straight bright and dark bands parallel to the x-axis

Answer 1

Sorry, I don't know........