BHU-PET SERIES Physics
Optics
5 previous year questions.
Volume: 5 Ques
Yield: Medium
High-Yield Trend
5
2019 Chapter Questions 5 MCQs
01
PYQ 2019
medium
physics ID: bhu-pet-
The beam profile of a laser operating in (fundamental mode) is:
1
Lorentzian
2
Voigt
3
Gaussian
4
Triangular
02
PYQ 2019
medium
physics ID: bhu-pet-
The spacing between two adjacent longitudinal modes in a plane laser resonator having separation between two mirrors, cm, is:
1
MHz
2
MHz
3
MHz
4
MHz
03
PYQ 2019
medium
physics ID: bhu-pet-
In interference with coherent sources, the fringe width varies as:
1
Directly as wavelength
2
Inversely as wavelength
3
Directly as the separation between slits
4
Inversely as the distance between the slits and screen
04
PYQ 2019
medium
physics ID: bhu-pet-
In Newtonโs rings experiment with two different media between the glass surfaces, the nth rings have diameters as 10:7. The ratio of the refraction indices of two media are:
1
2
3
4
05
PYQ 2019
medium
physics ID: bhu-pet-
Broad sources are required in:
1
Biprism experiment
2
Newtonโs ring experiment
3
Both Biprism experiment and Newtonโs ring experiment
4
None of the three
About Optics - BHU-PET
Optics is a vital chapter for BHU-PET aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Optics PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Optics carry the most weight. Then, tackle the questions iteratively to solidify your understanding.