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EndsemNov 20242019 patternFE

Engineering Physics SPPU Endsem Question Paper Nov 2024

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated Engineering Physics questions
Subject code
107002
Pattern
2019 pattern
Exam
Endsem
Session
Nov 2024
Max. marks
70
Time
2½ Hours
Semester
I/II
Paper code
[6351]-102

Printed for: F.E.

Instructions to the candidates

  1. Neat diagrams must be drawn wherever necessary.
  2. Figures to the right indicate full marks.
  3. Use of logarithmic tables slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed.
  4. Assuem Suitable data, if necessary. Constants: Mass of electron = 9.1×10 –31 kg. Charge on electron = 1.6×10 –19 c Velocity of light = 3×10 8 m/s Planck’s Constant = 6.63×10 –34 J.s

Questions

  1. Q1

    1. a)

      State de Broglie hypothesis. Derive de Broglie’s wavelength in terms of kinetic energy E and Potential difference V.

      Also asked:Nov 2025

      [6]
    2. b)

      What is normalisation condition, the wavefunction must satisfy? Write down the other conditions the wave function must satisfy.

      [4]
    3. c)

      Show that the energy of a particle in an infinite potential well is quantised by giving the expression of energy and with energy level diagram.

      [4]
    4. d)

      An electron is confined to a box of lenght 2 Å. Calculate the minimum uncertainty in its velocity.

      [4]

  2. Q2

    1. a)

      Derive Schrodinger’s time independent wave equation.

      Also asked:Feb 2026 ·Nov 2025 ·May 2025 ·Apr 2025 ·Nov 2024 ·May 2024 ·Nov 2023 ·May 2023 ·May 2022

      [6]
    2. b)

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

      [4]
    3. c)

      Write down any four properties of matter waves.

      [4]
    4. d)

      An electron is trapped in an infinite potential well of width 1Å calculate the lowest two permissible energies (in eV) the electron can have. 2

      [4]

  3. Q3

    1. a)

      Explain Hall Effect. Derive the equation for Hall voltage.

      Also asked:Feb 2026 ·Nov 2025 ·May 2025 ·Apr 2025 ·May 2024 ·Nov 2023 ·May 2023 ·May 2022

      [6]
    2. b)

      What is Fermi-Dirac Probability distribution function. Write the terms involved in the equation. Draw the Energy diagrams with Fermi energy level for intrinsic and extrinsic semiconductors at 0°k.

      [4]
    3. c)

      Draw the I-V characteristics of solar cell and define the terms; i) Fill factor ii) Open circuit voltage iii) Short circuit current

      Also asked:May 2023

      [4]
    4. d)

      Calculate the energy gap in silicon if it transparent to a radiation of wavelengths greater than or equal to 11,000 Å.

      [3]

  4. Q4

    1. a)

      By using energy band theory of solids explain classification of solids into conductors, semiconductors and insulators.

      Also asked:Nov 2024 ·Nov 2023 ·May 2023

      [6]
    2. b)

      Draw the energy band diagrams for Forward and Reverse biasing of the P-N junction diode.

      [4]
    3. c)

      Write down the experssion for conductivity of a semiconductor. Using this, find the expresions for, intrinsic semiconductors and extrinsic semiconductor.

      [4]
    4. d)

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

      [3]

  5. Q5

    1. a)

      Explain the origin of magnetism in brief Differentiate between paramagnetic materials and diamagnetic materials on the basis of magnetic susceptibility & magnetic permeability.

      [6]
    2. b)

      Explain Meissner effect. Show that superconductors are diamagnetic in nature.

      Also asked:Nov 2025

      [4]
    3. c)

      Explain the following terms: i) Critical magnetic field ii) Persistent current

      [4]
    4. d)

      The critical temperature for lead is 7.2K. However at 5K it loses its superconductivity when subjected to a magnetic field of 3.3×10 4 A/m. Find the maximum value of critical magnetic field which will allow the metal to retain its superconductivity at 0°K.

      Also asked:May 2022

      [4]

  6. Q6

    1. a)

      Explain superconductivity. Differentiate between Type I & Type II superconductors (Any 4 pts).

      Also asked:Nov 2023

      [6]
    2. b)

      Explain in brief the process of magnetic recordingand retreiving.

      [4]
    3. c)

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

      [4]
    4. d)

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

      [4]

  7. Q7

    1. a)

      What is meant by Non-destructive testing. Explain Acoustic Emission testing technique.

      [6]
    2. b)

      Explain optical and electrical properties of nanoparticles in brief.

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

      [4]
    3. c)

      Differentiate between Destructive and Non-destructive testing techniques.

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

      [4]
    4. d)

      Find the echo time of ultrasonic pulse which is travelling with the velocity of 3.1×10 3 m/s in a sheet of mild steel of thickness 9 mm.

      [3]

  8. Q8

    1. a)

      What is Nanotechnology? Explain briefly the variation in properties of nanoparticles on the basis of i) Surface area to volume ratio ii) Quantum confinement Effect.

      Also asked:Nov 2025

      [6]
    2. b)

      State any two applications of nanoparticles in i) Automobiles and ii) Medicine

      [4]
    3. c)

      Explain flaw detection method using ultrasonic testing.

      [4]
    4. d)

      An ultrasonic pulse is sent through a copper block and echo is recorded after 4 μ s. If velocity of ultrasonic waves is 5000 m/s, calculate the thickness of the copper block. 

      Also asked:Feb 2026 ·Apr 2025 ·Nov 2024 ·May 2024 ·Nov 2023

      [3]