BHU-PET SERIES Physics
Diffraction
3 previous year questions.
Volume: 3 Ques
Yield: Medium
High-Yield Trend
3
2019 Chapter Questions 3 MCQs
01
PYQ 2019
medium
physics ID: bhu-pet-
The minimum number of lines in a plane diffraction grating required to just resolve the sodium doublet (5890 Å and 5896 Å) in first order is:
1
982
2
491
3
1964
4
246
02
PYQ 2019
medium
physics ID: bhu-pet-
If is the total number of rulings on the grating, is the order of the spectrum, and is the wavelength of light, then the resolving power of the grating is:
1
2
3
4
03
PYQ 2019
medium
physics ID: bhu-pet-
In a plane transmission grating, the angle of diffraction for the second-order principal maxima for wavelength Å is . The number of lines per cm of the grating surface is:
1
10000
2
7500
3
5000
4
1500
About Diffraction - BHU-PET
Diffraction 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 Diffraction 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 Diffraction carry the most weight. Then, tackle the questions iteratively to solidify your understanding.