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EndsemFeb 20262024 patternFE

Engineering Physics SPPU Endsem Question Paper Feb 2026

All 11 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated Engineering Physics questions
Pattern
2024 pattern
Exam
Endsem
Session
Feb 2026
Max. marks
70
Semester
I/II
Paper code
[6581]-2404

Instructions to the candidates

  1. Q.1 is compulsory
  2. Solve Q.2 or Q.3, Q.4 or Q.5, Q.6 or Q.7, Q.8 or Q.9 and Q.10 or Q.11.
  3. Neat diagrams must be drawn wherever necessary.
  4. Assume suitable data, if necessary. Physical Constants:
  5. Mass of electron, me = 9.1 × 10^-31 kg
  6. Charge on electron, e = 1.6 × 10^-19 C
  7. Planck's constant, h = 6.63 × 10^-34 J-sec

Questions

  1. Q1

    1. Choose the correct answer and rewrite it.

      [10]
    2. a)

      Carbon dioxide laser emits wavelength in ______. i) Visible region ii) Ultraviolet region iii) Infrared region iv) None of the Above

    3. b)

      In optical fiber, acceptance cone is ______ the acceptance angle. i) Equal ii) Double iii) Half iv) One Third

    4. c)

      The matter waves are ______. i) Electromagnetic waves ii) Mechanical Waves iii) Ultrasonic waves iv) Neither Electromagnetic nor Mechanical Waves

    5. d)

      Wave function Ψ of a particle is i) A real quantity ii) A complex quantity SPPU QUESTION PAPER www.mysppu.in Page 1 MySPPU · Engineering Physics Page 1 of 4 iii) An imaginary quantity iv) None of these

    6. e)

      The points of constructive interference of light are, i) Always bright ii) May be bright or dark iii) Always dark iv) Neither bright nor dark

    7. f)

      The Plane-polarized light, vibrations of particles in medium are in the direction ______ to direction propagation of light. i) Inclined ii) Perpendicular iii) Antiparallel iv) None

    8. g)

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

    9. h)

      The Frequency range for ultrasonic is i) less than 20Hz ii) 20 Hz to 20 KHz iii) Greater Than 20-KHz iv) None of the above i) The minimum magnetic field required to destroy superconductivity is called ______. i) Critical magnetic field ii) Applied magnetic field iii) External magnetic field iv) None j) Nanotechnology studies for the size of particles i) 100-1000 nm ii) More than 100 nm iii) 1-100 nm iv) None

  2. Q2

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

    2. a)

      With the help of an energy level diagram, explain the construction and working of CO2 laser.

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

      [6]
    3. b)

      Differentiate between step index and graded index fibers. (Any three points)

      Also asked:Oct 2025 ·Apr 2025 ·Mar 2025 ·Nov 2024 ·Mar 2024

      [3]
    4. c)

      Calculate the numerical aperture and acceptance angle of an optical fiber having n1 = 1.48 and n2 = 1.45.

      Also asked:Nov 2024 ·Sep 2024 ·Oct 2023 ·Oct 2022

      [3]

  3. Q3

    1. a)

      What is attenuation in optical fibers? Discuss in brief the various internal and external factors responsible for attenuation.

      Also asked:Apr 2025 ·Nov 2024

      [6]
    2. b)

      State characteristics of a laser. Explain any one of them in brief.

      Also asked:Apr 2025

      [3]
    3. c)

      What is stimulated emission? Explain its significance in the production of lasers.

      Also asked:Apr 2025

      [3]

  4. Q4

    1. a)

      Starting from de Broglie equation, derive Schrodinger’s Time Independent wave equation.

      Also asked:Nov 2025 ·May 2025 ·Apr 2025 ·Nov 2024 ·Nov 2024 ·May 2024 ·Nov 2023 ·May 2023 ·May 2022

      [6]
    2. b)

      State de Broglie hypothesis. Derive the equation of de Broglie wavelength by analogy with radiation.

      Also asked:Apr 2025

      [3]
    3. c)

      Lowest energy of an electron trapped in potential well is 38 eV. Calculate the width of well.

      Also asked:Apr 2025 ·May 2024 ·May 2022

      [3]

  5. Q5

    1. a)

      For a particle trapped in a one-dimensional rigid box, derive the equation for its energy.

      Also asked:Nov 2025 ·Apr 2025 ·May 2024 ·Nov 2023 ·May 2022

      [6]
    2. b)

      Differentiate between classical and quantum computing (any three).

      Also asked:Apr 2025

      [3]
    3. c)

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

      [3]

  6. Q6

    1. a)

      For a thin parallel film derive an expression for the effective path difference in the reflected system. Obtain the condition of maximum and minimum.

      Also asked:Apr 2025

      [6]
    2. b)

      Differentiate between positive and negative crystal.

      Also asked:Apr 2025

      [3]
    3. c)

      Obtain the intensity of light transmitted by the analyzer if the angle between polarizer and analyzer is 45°.

      Also asked:Apr 2025

      [3]

  7. Q7

    1. a)

      What is double refraction? Explain Huygens’ theory of double refraction.

      Also asked:Mar 2026 ·Oct 2025 ·Apr 2025 ·Nov 2024 ·Mar 2024 ·Oct 2023 ·Oct 2022

      [6]
    2. b)

      Explain the application of interference as an antireflection coating.

      Also asked:Apr 2025 ·Nov 2024

      [3]
    3. c)

      The wedge-shaped film of refractive index 1.5, is illuminated by the light of wavelength 5890 Å. If the angle of the wedge is 30 seconds, calculate the fringe width.

      Also asked:Apr 2025

      [3]

  8. Q8

    1. a)

      State and explain Hall Effect. Derive the equation of Hall voltage and Hall coefficient.

      Also asked:Nov 2025 ·May 2025 ·Apr 2025 ·Nov 2024 ·May 2024 ·Nov 2023 ·May 2023 ·May 2022

      [6]
    2. b)

      What are ultrasonic waves? State characteristics of ultrasonic wave. (any four) [3] SPPU QUESTION PAPER www.mysppu.in Page 3 MySPPU · Engineering Physics Page 3 of 4

    3. c)

      An ultrasonic pulse is sent through a steel block, an echo is recorded after 1.512 microseconds, calculate the thickness of steel block if the velocity of ultrasonic waves is 5900 m/s.

      Also asked:Apr 2025 ·Nov 2024 ·Nov 2024 ·May 2024 ·Nov 2023

      [3]

  9. Q9

    1. a)

      What is an echo sounding technique? Using this technique explain the method for flaw detection using ultrasonic waves.

      Also asked:Apr 2025 ·May 2024

      [6]
    2. b)

      Define Fermi level for metal. Write the formula for Fermi-Dirac distribution function and explain the terms involved in it.

      Also asked:Apr 2025

      [3]
    3. c)

      In a semiconductor with a Hall coefficient of 145 cm³/C having a width of 2 cm and a thickness 0.2 cm with a magnetic field induction of 2T along the smaller dimension with a current of 150 mA. Calculate hall voltage.

      [3]

  10. Q10

    1. a)

      Explain the process of manufacturing nanoparticles using Physical Vapor Deposition. State advantages and limitations of this method.

      Also asked:Apr 2025

      [6]
    2. b)

      What is Critical magnetic field? Write its equation and explain the terms involved in it. A superconductor has a critical temperature of 3.7 K. At 0 K the critical magnetic field is 0.0306 Tesla. What is the critical magnetic field at temperature 2 K.

      Also asked:Apr 2025

      [6]

  11. Q11

    1. a)

      Explain the Meissner effect. What is the cause of the Meissner effect? Show that superconductors exhibit perfect diamagnetism.

      Also asked:Apr 2025 ·Nov 2024 ·Nov 2023

      [6]
    2. b)

      Explain electrical and optical properties of nanoparticles. [6] SPPU QUESTION PAPER www.mysppu.in Page 4 MySPPU · Engineering Physics Page 4 of 4

      Also asked:Apr 2025