Physics · Wave Optics
NEET (UG) 2023 — Question 15
Given below are two statements : one is labelled as Statement I and the other is labelled as Statement II :
Statement I: If screen is moved away from the plane of slits, angular separation of the fringes remains constant.
Statement II: If the monochromatic source is replaced by another monochromatic source of larger wavelength, the angular separation of fringes decreases.
In the light of the above statements, choose the most appropriate answer from the options given below:
- Option A:
Both statement I and statement Il are incorrect.
- Option B:Correct
Statement I is correct and statement Il is incorrect.
- Option C:
Statement I is incorrect and statement Il is correct.
- Option D:
Both statements 1 and statements ll are correct.
Answer: B
Step-by-step solution
Sol. For YDSE, angular fringe width is given by It does not depend on the distance of screen from the slit, so statement I is correct. Angular fringe width If angular separation of fringes increases So, statement I is true and statement II is false.
Answer key and solution verified before publishing.
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- Exam
- NEET (UG) 2023
- Paper
- 2023 paper
- Subject
- Physics
- Chapter
- Wave Optics
- Topic
- Young's Double Slit Experiment and Its Modifications