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InsemOct 20222019 patternFE

Engineering Physics SPPU Insem Question Paper Oct 2022

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 2022
Max. marks
30
Time
1 Hour
Semester
I
Paper code
[5931]-1002

Printed for: F.E. (Common)

Instructions to the candidates

  1. Solve Q.1 or Q.2 and Solve Q.3 or Q.4.
  2. Neat diagrams must be drawn wherever necessary.
  3. Figures to the right indicate full marks.
  4. Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed.
  5. Assume suitable data, if necessary.

Questions

  1. Q1

    1. a)

      What is Fraunhofer diffraction. State the equations for resultant amplitude and resultant intensity between the diffracted waves in Fraunhofer diffraction due to a single slit. State the conditions of maximum and minimum intensity.

      [6]
    2. b)

      State and explain Malus law with proof.

      [5]
    3. c)

      White light falls at an angle of 45° on a thin film of soap bubble having refractive index 1.33. At what minimum thickness of the film it will appear bright yellow of wave length 5896 A° in the reflected light.

      [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 2023

      [6]
    2. b)

      What is interference of light? Explain the use of thin film as antireflection coating.

      [5]
    3. c)

      What is the highest order spectrum that is visible with light of wavelength 6000 A° by means of grating having 5000 lines per centimeter. 2

      [4]

  3. Q3

    1. a)

      Explain the construction and working or a carbon dioxide laser.

      Also asked:Oct 2023

      [6]
    2. b)

      What are optical fibres? Distinguish between step index optical fibre and graded index optical fibre. (Any 4 pts)

      Also asked:Mar 2026

      [5]
    3. c)

      Calculate the numerical aperture and acceptance angle of an optical fibre having core refractive index 1.49 and cladding refractive index 1.44.

      Also asked:Feb 2026 ·Nov 2024 ·Sep 2024 ·Oct 2023

      [4]

  4. Q4

    1. a)

      What are optical fibres? Draw a neat labelled diagram of cross section of optical fibre showing total internal reflection. State the advantages of optical fibre communication over the conventional communication system. (Any 4 pts.)

      [6]
    2. b)

      What is holography? Explain recording of a hologram using laser.

      Also asked:Mar 2026 ·Mar 2025 ·Sep 2024 ·Mar 2024 ·Oct 2023

      [5]
    3. c)

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

      [4]