Discussion
In Young's double slit experiment using a source of wavelength λ interference bands are observed on a screen. If the separation between the slits alone is halved in this experiment, then the angular separation ω of the fringes on the screen becomes
Answer: A
The angular separation becomes \(2\omega\).
The angular fringe separation in Young's experiment is
\[ \omega = \frac{\lambda}{d} \]
which is inversely proportional to the slit separation \(d\). Halving \(d\) doubles it. \(\frac{\omega}{2}\) would follow from doubling the separation, and the factors \(\sqrt{2}\) do not occur.
The linear fringe width \(\beta = \frac{\lambda D}{d}\) on the screen doubles too, since it is the angular separation multiplied by the screen distance.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development