A parallel beam of monochromatic light is used in a Young’s double slit experiment. The…
Physics · JEE Advanced · NTA Exams — Optics
A parallel beam of monochromatic light is used in a Young’s double slit experiment. The slits are separated by a distance d and the screen is placed parallel to the plane of the slits. The angle which the incident beam must make with the normal to the plane of the slits to produce darkness at the position of central brightness is
- \(\cos ^{-1} \frac{\lambda}{d}\)
- \(\cos ^{-1} \frac{2 \lambda}{d}\)
- \(\sin ^{-1} \frac{\lambda}{d}\)
- \(\sin ^{-1} \frac{\lambda}{2 d}\)
Answer
(D) ^ -1 2 d
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