Question

Select One Correct Option from the following: 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 ($S_{1}$, $S_{2}$) 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 $S_{1}$$S_{2}$, as shown schematically in the figure. The distance between the sources is d = 0.6003 mm.The origin O is at the intersection of the screen and the line joining $S_{1}$$S_{2}$. Which of the following is(are) true of the intensity pattern on the screen?
(A)Straight bright and dark bands parallel to the x-axis.
(B)The region very close to the point O will be dark.
(C)Hyperbolic bright and dark bands with foci symmetrically placed about O in the x-direction.
(D)Semi circular bright and dark bands centered at point O.

Answer 1

a option is correct I think

Answer 2

A is correct

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