IOE PapersTU
PYQs & Syllabus Archive
ENSH 102Bachelor in Mechanical Engineering · Semester 12 Papers Available

Engineering Physics

Past examination question papers and complete curriculum syllabus for Engineering Physics (ENSH 102), Bachelor in Mechanical Engineering Semester 1 under Institute of Engineering (IOE), Tribhuvan University.

Sem 1 Subjects (5)View Full Semester Overview →
ENSH 101Engineering Mathematics IENSH 102Engineering PhysicsENCT 101Computer ProgrammingENME 101Engineering DrawingENEE 103Fundamental of Electrical and Electronics Engineering
PDF PapersMost Asked PYQsPast 10 YearsSyllabusMarks Scheme

Past Question Papers (PDF)

Switch tabs to view different exam papers
Available Papers:

1st-sem_Engineering Physics.pdf

IOE Past Examination Paper

Download PDF
Served via fast CDN. Read in full view or download for offline study.
Drive Mirror ↗Direct Download ↓

Document information: This past examination paper is identified as an IOE/TU academic document and was cataloged from a public Google Drive archive. This independent website did not create the examination paper and is not affiliated with TU or IOE.

Rights holders can request correction or removal by emailing subeshgaming@gmail.com with this page URL and supporting details.

Most Frequently Asked Questions

Top recurring IOE board exam questions for Engineering Physics with verified mark schemes, formula notation, and recurrence frequency.

Showing 40 of 40 top repeated questions
8 Chapters · Click any chapter to expand
·

Year-wise & Session-wise Exam Papers

Complete questions from each exam session (Regular & Back exams from 2082 to 2069) for Engineering Physics. Click any session paper to expand.

Showing 391 questions across 26 exam session papers
Institute of Engineering • 2083 Baishakh Board Examination
Q1[8 Marks]Oscillation
A spring is stretched by when a load of is suspended to the lower and (upper end of spring is fixed). What will be the maximum velocity of object if it is pulled down further by form equilibrium position and then released?
Q2[8 Marks]Oscillation
Derive expression for the time period of a physical pendulum and establish the interchangeability of the point of oscillation and point of suspension. \n**[OR]**\n Derive a differential equation for damped harmonic oscillation. Write it solution and angular frequency. Hence discuss all three cases of damped angular frequency and corresponding motion.
Q3[8 Marks]Optics
A plane transmission grating of width has . Find the resolving power of grating for second order spectrum and the smallest wavelength difference that can be resolved for light of wavelength .
Q4[8 Marks]Optics
A soap film thick is viewed at an angle of to the normal. Find the wavelength of the visible light which will be absent from the reflected light.
Q5[8 Marks]Optics
Two thin lenses of focal lengths and separated by a distance have an equivalent focal length and both lenses are of same material. The combination of lenses satisfies the condition of achromatism and minimization of spherical aberration. Find the value of and .
Q6[8 Marks]Optics
In Newton's rings experiment, "Central spot is dark in reflected system" and "Fringes get closer as the number of orders increased" explain. Is it possible to make central spot bright in reflected system? If so, how? \n**[OR]**\n How can you produce linearly, circularly and elliptically polarized light and explain with mathematical expressions?
Q7[8 Marks]Electrostatics
An electric dipole consists of charges and separated by a distance of . What is the maximum torque experienced by the dipole if placed in the uniform electric field of intensity ?
Q8[8 Marks]Electrostatics
A parallel plate capacitor has a capacitance of , with a plate area of is filled with a substance of dielectric constant . A potential difference of is maintained between plates. Determine (i) The electric field strength in the dielectrics. (ii) The magnitude of free charge on the plate. (iii) The magnitude of induced surface charge. And (iv) the magnitude of polarization vector.
Q9[8 Marks]Electrostatics
Derive an expression for the electric field intensity due to a uniformly distributed charged plastic ring of radius at a distance from the center on its axis. Also locate the point where electric field is maximum. [4+1] OR Define electric quadruple and electric quadruple moment. Show that electric potential due to a linear quadruple for large distance along the axis is proportional to .
Q10[8 Marks]Electromagnetism
Describe the working mechanism of cyclotron. Find the expression for maximum energy of a rotating particles in a cyclotron. Write its limitation. How can you overcome its limitation? \n**[OR]**\n State Ampere's law in magnetism. Calculate the magnetic field outside and inside a current carrying long straight conductor.
Q11[8 Marks]Electromagnetism
Derive expression for inductance of a solenoid and show that the inductance depends on the geometry of the solenoid.
Q12[8 Marks]Electromagnetic Waves
Write Maxwell's equations in integral form. Convert them into differential form.
Q13[8 Marks]Photon and Matter Waves
What are particle velocity and wave velocity? Find the relation between them.
Q14[8 Marks]Heat and Thermodynamics
Discuss microscopic view of conduction. Show that resistivity and conductivity are independent of applied field and depends on nature of material.
Q15[8 Marks]Optics
Define an optical fiber and its types. Explain the numerical aperture and acceptance angle for the optical fiber and derive the expression to establish a relationship between them.
Q16[8 Marks]Photon and Matter Waves
A beam of electrons having energy of is incident on a potential barrier of height . If the width of the barrier is , calculate the percentage transmission of the beam through the barrier.

Curriculum Syllabus & Course Topics

Sourced from TU curriculum portal
Full Syllabus (PDF)
Chapter-wise Units & Micro-Syllabus Topics (8 Units)

  1. 1. Oscillation

    • 1.1Physical pendulum
    • 1.1.1Bar pendulum
    • 1.1.2Interchangeability of point of suspension and point of oscillation
    • 1.1.3Minimum time period in case of physical pendulum
    • 1.1.4Torsion pendulum
    • 1.2Damped and forced oscillation
    • 1.2.1Damped harmonic oscillator
    • 1.2.2Difference between free and damped oscillator
    • 1.2.3Energy in damped oscillation
    • 1.2.4Relaxation time
    • 1.2.5Forced oscillation and resonance
    • 1.2.6Sharpness of resonance
    • 1.2.7Quality factor

  2. 2. Acoustics

    • 2.1Introduction
    • 2.1.1Threshold of hearing and loudness
    • 2.1.2Reverberation and reverberation time
    • 2.1.3Absorption coefficient
    • 2.1.4Sabine's law
    • 2.1.5Conditions for good acoustics
    • 2.2Ultrasound
    • 2.2.1Production (Piezoelectric) of ultrasound and its applications
    • 2.2.2Test of structure and materials
    • 2.2.3Medical uses

  3. 3. Heat and Thermodynamics

    • 3.1Quantity of heat
    • 3.1.1Calorific value of foods and fuels
    • 3.1.2Bomb calorimeter
    • 3.1.3Specific heat of solid: Dulong-Petit law, Einstein’s law
    • 3.2Nature of heat
    • 3.2.1Degree of freedom
    • 3.2.2Maxwell’s law of equipartition of energy
    • 3.2.3Atomicity of gases
    • 3.2.4Vander-Waal’s equation of real gases
    • 3.2.5Critical constants
    • 3.3Thermodynamics
    • 3.3.1Laws of thermodynamics
    • 3.3.2Clapeyron latent heat equation
    • 3.3.3Entropy and Third law of thermodynamics
    • 3.3.4Negative energy
    • 3.3.5Maxwell’s thermodynamic relations
    • 3.3.6Gibb’s free energy and phase transitions
    • 3.4Heat and mass transfer
    • 3.4.1Fourier’s law of thermal conductivity
    • 3.4.2Use of thermal conductivity in building sciences
    • 3.4.3Thermal resistance
    • 3.4.4Types of convection
    • 3.4.5Law of diffusion
    • 3.4.6Relation between Stefan’s law and Newton’s law of Cooling
    • 3.4.7Pyrheliometer and Pyrometer

  4. 4. Optics

    • 4.1Geometrical optics
    • 4.1.1Lens separation
    • 4.1.2Chromatism in lens combination
    • 4.2Interference
    • 4.2.1Interference in thin films (Reflected and transmitted light)
    • 4.2.2Fringes produced by a wedge-shaped thin film
    • 4.2.3Newton's rings (Both reflected and transmitted case)
    • 4.2.4Determination of wavelength of light and refractive index of liquid by using Newton’s rings.
    • 4.3Diffraction
    • 4.3.1Introduction: Fresnel and Fraunhoffer’s diffraction
    • 4.3.2Fraunhoffer’s diffraction at single slit
    • 4.3.3Intensity distribution in the diffraction pattern due to a single slit
    • 4.3.4Multiple slits, diffraction grating
    • 4.3.5X-ray diffraction, X-rays in material testing
    • 4.4Polarization
    • 4.4.1Introduction: double refraction, Nichol prism (Construction and uses)
    • 4.4.2Retardation plate (Quarter and half wave plates), plane, elliptical and circular polarized light (Theoretical and mathematical explanation)
    • 4.4.3Optical activity, specific rotation
    • 4.5Laser
    • 4.5.1Introduction: Laser and ordinary light, properties of laser
    • 4.5.2Induced absorption, spontaneous and stimulated emission, active medium, population inversion, metastable state
    • 4.5.3Pumping (Types: Optical, electrical, chemical and thermal)
    • 4.5.4He-Ne laser, semiconductor laser
    • 4.5.5Uses of laser
    • 4.6Fiber optics
    • 4.6.1Introduction: Propagation of light wave
    • 4.6.2Types of optical fiber: Step index and graded index
    • 4.6.3Fiber transmission- Single and multimode, self-focusing, acceptance angle and numerical aperture
    • 4.6.4Applications

  5. 5. Electrostatics

    • 5.1Electric field
    • 5.1.1Electric field due to an electric dipole (Along axial line and equatorial line)
    • 5.1.2Electric dipole in an external electric field
    • 5.1.3Electric field due to linear electric quadrupole (Along axial line)
    • 5.1.4Electric field: A ring of charge, circular ring and disc of charge
    • 5.2Electric potential
    • 5.2.1Potential due to electric dipole
    • 5.2.2Potential due to linear quadrupole
    • 5.2.3potential due to continuous charge distribution, potential due to ring of charge and disc of charge
    • 5.3Capacitors
    • 5.3.1Cylindrical capacitor
    • 5.3.2Charging and discharging of capacitor
    • 5.3.3Capacitor with dielectrics: dielectrics and Gauss law
    • 5.3.4High intensity electrostatic fields: Uses and hazards (Xerography, inkjet, precipitation)

  6. 6. Electromagnetism

    • 6.1Electromagnetic induction
    • 6.1.1Faraday’s laws
    • 6.1.2Induction and energy transformation
    • 6.1.3Induced electric field
    • 6.1.4Self-induction and mutual induction
    • 6.1.5LR circuit
    • 6.1.6Energy stored in a magnetic field and energy density
    • 6.1.7Induced magnetic field: Modified Ampere’s law and displacement current
    • 6.2Eddy current
    • 6.2.1Introduction
    • 6.2.2Applications: Induction cooker, electric guitar, metal detector and Eddy current breaking
    • 6.2.3Cyclotron and Synchrotron

  7. 7. Electromagnetic Waves

    • 7.1Maxwell’s equations
    • 7.1.1Differential and integral forms
    • 7.1.2Conversion of Maxwell’s equations from integral form to differential form and differential form to integral form
    • 7.1.3Maxwell’s equations in different media
    • 7.2Applications
    • 7.2.1Wave equations: Non conducting and conducting medium and free space
    • 7.2.2Plane solution of wave equations, amplitude of electromagnetic waves, speed of electromagnetic waves, ratio of electric and magnetic fields
    • 7.2.3Continuity equation
    • 7.2.4Energy transfer and Poynting vector, radiation pressure

  8. 8. Photon and Matter Waves

    • 8.1Quantum physics
    • 8.1.1Inadequacy of classical mechanics and rise of quantum mechanics, quantization of energy
    • 8.1.2Group velocity and phase velocity, electrons and matter waves
    • 8.1.3de-Broglie wavelength, its applications
    • 8.1.4Heisenberg uncertainty principle and its applications
    • 8.1.5Wave functions and its significance
    • 8.2Schrodinger wave equation
    • 8.2.1Time dependent and independent equation
    • 8.2.2Probability distribution
    • 8.2.3One dimensional infinite potential well, particle in a box
    • 8.2.4Barrier tunneling (Reflection and transmission coefficient)

Examination Scheme & Marks Distribution

Evaluation Structure

  • Final Board Theory Exam: 60 Marks (Pass mark: 24)
  • Internal Assessment: 40 Marks (Pass mark: 16)
  • Practical / Lab Exam: 25 or 50 Marks (Continuous lab evaluation + viva, where applicable)

* This is the general current IOE 60/40 scheme; verify course-specific details in the syllabus above.

Exam Preparation Guidelines

  • Review the 2 available past examination papers to identify recurring patterns, core problem types, and chapter weightage.
  • Cross-reference key answers with official syllabus units, standard textbooks, and lecture notes.
  • Structure answers with labeled diagrams, concise bullet points, and highlight final answers in numerical solutions.
Authentic IOE Past Papers
Free Direct PDF Download
Curriculum Syllabus & Marking Scheme