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InsemOct 20232019 patternFE

Engineering Physics SPPU Insem Question Paper Oct 2023

All 4 questions from this SPPU insem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated Engineering Physics questions
Subject code
107002
Pattern
2019 pattern
Exam
Insem
Session
Oct 2023
Max. marks
30
Time
1 Hour
Semester
I
Paper code
[6185]-51

Printed for: F.E. (Common) (Insem)

Instructions to the candidates

  1. Solve Q1 or Q2 and solve Q3 or Q4.
  2. Neat diagram must drawn wherever necessary.
  3. Figures to the right indicates full marks.
  4. Assume Suitable data, if necessary.

Questions

  1. Q1

    1. a)

      Derive expression for path difference in reflected system for thin film of uniform thickness and obtain condition for maxima and minima.

      [6]
    2. b)

      This part has equations that don’t show as text. Open the PDF to read it.

      [5]
    3. c)

      How should the polarizer and analyzer be oriented so that intensity of transmitted light becomes to i) 0.50 ii) 0.25 times the maximum intensity?

      [4]

  2. Q2

    1. a)

      What is double refraction? Explain Huygen’s theory of double refraction.

      Also asked:Mar 2026 ·Feb 2026 ·Oct 2025 ·Apr 2025 ·Nov 2024 ·Mar 2024 ·Oct 2022

      [6]
    2. b)

      Explain the use of thin film as Antireflection coating along with equation of thickness of coating.

      [5]
    3. c)

      In a plane transmission grating, the angle of diffraction for the second order principal maximum for wavelength 5 × 10 –5 cm is 30º. Calculate the number of lines / cm of the grating surface.

      Also asked:Oct 2025

      [4]

  3. Q3

    1. a)

      Explain with neat labelled diagram construction and working of a carbon dioxide laser.

      Also asked:Oct 2022

      [6]
    2. b)

      What is optic fibre? Give the difference between step Index and Graded Index optic fibre (any 2).

      [5]
    3. c)

      Calculate the numerical aperture and acceptance angle of an optical fibre having n 1 = 1.49 and n 2 = 1.44.

      Also asked:Feb 2026 ·Nov 2024 ·Sep 2024 ·Oct 2022

      [4]

  4. Q4

    1. a)

      Explain the process of fiber optics communication system with neat block diagram. State any two advantages of fiber optics communication.

      Also asked:Mar 2024

      [6]
    2. b)

      What is Holography? Explain the process of hologram recording.

      Also asked:Mar 2026 ·Mar 2025 ·Sep 2024 ·Mar 2024 ·Oct 2022

      [5]
    3. c)

      This part has equations that don’t show as text. Open the PDF to read it.

      [4]