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ENSH 102Bachelor in Agriculture Engineering · Semester 12 Papers Available

Engineering Physics

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

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Most Frequently Asked Questions

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

Showing 30 of 30 top repeated questions

Oscillation

4 Questions
#1Repeated 3 Times[5 Marks]Oscillation
Derive an expression for the time period of a physical pendulum and establish the interchangeability of the point of oscillation and point of suspension.
Appeared in:2083 Baishakh2082 Shrawan2082 Baishakh
#2Repeated 2 Times[5 Marks]Oscillation
Show that the motion of a torsional pendulum is angular simple harmonic in nature and find the time period of torsional oscillation.
Appeared in:2081 Bhadra2079 Baishakh
#3Repeated 2 Times[5 Marks]Oscillation
What is LC oscillation? Derive the differential equation of free LC oscillation and compare its solution with a mass-spring mechanical system.
Appeared in:2082 Shrawan2080 Bhadra
#4Repeated 1 Times[5 Marks]Oscillation
Derive a differential equation for damped harmonic oscillation. Write its solution and angular frequency. Hence discuss all three cases of damping.
Appeared in:2083 Baishakh

Acoustics

3 Questions
#1Repeated 3 Times[5 Marks]Acoustics
Write features of an acoustically good auditorium. Derive Sabine's formula for reverberation time: $T = \frac{0.161 V}{\sum \alpha S}$.
Appeared in:2082 Shrawan2081 Bhadra2078 Chaitra
#2Repeated 2 Times[5 Marks]Acoustics
A reverberation time of 2.3 seconds is observed in a hall of volume $5500\text{ m}^3$. The sound absorbing surface has an area of $750\text{ m}^2$. Calculate the average absorption coefficient. How much additional absorption is needed to reduce reverberation time to 1.5 seconds?
Appeared in:2082 Baishakh2079 Bhadra
#3Repeated 1 Times[5 Marks]Acoustics
Give an account of bad acoustic properties of a hall and discuss the method to improve these defects.
Appeared in:2082 Shrawan

Optics

7 Questions
#1Repeated 3 Times[5 Marks]Optics
Explain the formation of Newton's ring in reflected system of monochromatic light. Prove that in reflected light diameters of the dark rings are proportional to the square root of natural numbers.
Appeared in:2083 Baishakh2082 Shrawan2082 Baishakh
#2Repeated 2 Times[5 Marks]Optics
Show that the intensity of second order maxima of Fraunhofer's single slit diffraction is $(2/5\pi)^2$ times the intensity of central maxima.
Appeared in:2082 Shrawan2082 Baishakh
#3Repeated 2 Times[5 Marks]Optics
Define acceptance angle of an optical fiber. Derive the expressions for acceptance angle and numerical aperture. Also show $N.A. = \sqrt{n_1^2 - n_2^2}$.
Appeared in:2083 Baishakh2082 Baishakh
#4Repeated 2 Times[5 Marks]Optics
Derive the expression for the equivalent focal length of two thin lenses having focal lengths $f_1$ and $f_2$ separated by a distance $d$. Also find the position of principal points.
Appeared in:2083 Baishakh2082 Baishakh
#5Repeated 2 Times[5 Marks]Optics
What is polarization? Derive the condition for the production of plane, elliptical, and circularly polarized light by superposition of two mutually perpendicular simple harmonic vibrations.
Appeared in:2082 Shrawan2081 Baishakh
#6Repeated 2 Times[5 Marks]Optics
Explain the theory of plane transmission diffraction grating. Derive the grating equation $(a + b)\sin\theta = n\lambda$ and find the maximum number of orders possible.
Appeared in:2081 Bhadra2080 Baishakh
#7Repeated 2 Times[5 Marks]Optics
Explain the construction and working of a He-Ne laser with an energy level diagram. Mention its important industrial and medical applications.
Appeared in:2082 Baishakh2078 Bhadra

Electrostatics

5 Questions
#1Repeated 3 Times[5 Marks]Electrostatics
Define electric quadrupole and electric quadrupole moment. Show that electric potential due to a linear quadrupole for a large distance $r$ is proportional to $r^{-3}$.
Appeared in:2083 Baishakh2082 Shrawan2082 Baishakh
#2Repeated 2 Times[5 Marks]Electrostatics
Derive an expression for the electric field intensity due to a uniformly distributed charged plastic ring of radius $R$ at a distance $x$ from the center on its axis. Also locate the point where electric field is maximum.
Appeared in:2083 Baishakh2082 Baishakh
#3Repeated 2 Times[5 Marks]Electrostatics
Find the electric field intensity at a point $(0, 0, z)$ on the axis of a uniformly charged circular ring of radius $R$ and total charge $q$. Hence deduce the electric field due to a charged circular disc.
Appeared in:2081 Bhadra2079 Baishakh
#4Repeated 2 Times[5 Marks]Electrostatics
Derive an expression for the capacitance of a cylindrical capacitor with inner radius $a$, outer radius $b$, and length $L$, containing a dielectric material of permittivity $\epsilon$.
Appeared in:2082 Baishakh2080 Bhadra
#5Repeated 1 Times[5 Marks]Electrostatics
Mention the steps to calculate the capacitance of a capacitor. Show that the capacitance of a cylindrical capacitor is inversely proportional to logarithmic of the ratio between outer radius to inner radius.
Appeared in:2082 Baishakh

Electromagnetism

5 Questions
#1Repeated 3 Times[5 Marks]Electromagnetism
Describe the working mechanism of cyclotron. Find the expression for maximum energy of particles in a cyclotron. What are its limitations and how can you overcome them?
Appeared in:2083 Baishakh2082 Shrawan2082 Baishakh
#2Repeated 2 Times[5 Marks]Electromagnetism
State Ampere's law in magnetism. Calculate the magnetic field outside and inside a current carrying long straight conductor.
Appeared in:2083 Baishakh2082 Baishakh
#3Repeated 2 Times[5 Marks]Electromagnetism
Compare Biot-Savart law with Ampere's circuital law. Calculate the magnetic field outside and inside a long, straight cylindrical conductor of radius $R$ carrying a steady current $I$.
Appeared in:2081 Bhadra2082 Baishakh
#4Repeated 2 Times[5 Marks]Electromagnetism
State Faraday's laws of electromagnetic induction and Lenz's law. Derive an expression for the self-inductance of a long solenoid of length $l$, area of cross-section $A$, and $N$ total turns.
Appeared in:2082 Shrawan2078 Bhadra
#5Repeated 1 Times[5 Marks]Electromagnetism
What is Hall effect? Derive the expressions for Hall coefficient and Hall resistance. Also show the variation of Hall resistance with magnetic field.
Appeared in:2082 Baishakh

Electromagnetic Waves

3 Questions
#1Repeated 3 Times[5 Marks]Electromagnetic Waves
Define Poynting vector $\vec{S} = \frac{1}{\mu_0}(\vec{E} \times \vec{B})$. Show that the average energy density in an electromagnetic wave is shared equally between the electric and magnetic fields.
Appeared in:2082 Shrawan2081 Bhadra2078 Bhadra
#2Repeated 2 Times[5 Marks]Electromagnetic Waves
Write Maxwell's equations in differential form. Convert them into integral form. Explain the physical significance of each of them.
Appeared in:2083 Baishakh2082 Baishakh
#3Repeated 2 Times[5 Marks]Electromagnetic Waves
Define displacement current and explain the necessity of introducing displacement current term $\epsilon_0 \frac{\partial \vec{E}}{\partial t}$ in Ampere's circuital law.
Appeared in:2082 Baishakh2081 Bhadra

Photon and Matter Waves

3 Questions
#1Repeated 3 Times[5 Marks]Photon and Matter Waves
State Heisenberg's uncertainty principle. Using this principle, prove that an electron cannot reside inside an atomic nucleus.
Appeared in:2082 Shrawan2081 Baishakh2079 Bhadra
#2Repeated 2 Times[5 Marks]Photon and Matter Waves
What is the physical significance of wave function? Derive the relation of Schrodinger wave equation in time dependent form.
Appeared in:2082 Shrawan2082 Baishakh
#3Repeated 1 Times[5 Marks]Photon and Matter Waves
A beam of electrons having energy of each 3 eV is incident on a potential barrier of height 4 eV. If the width of the barrier is 20 nm, calculate the percentage transmission of the beam through the barrier.
Appeared in:2083 Baishakh

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.

Frequently Asked Questions (Engineering Physics)

Q: How can I download Engineering Physics past question papers?

You can preview or download the Engineering Physics question papers (PDF) directly using the built-in viewer on this page with zero redirects or paywalls.

Q: What is the pass mark for Engineering Physics?

The general current scheme is a 60-mark final theory exam and a 40-mark internal assessment, with pass marks of 24 and 16. Verify the course-specific syllabus above.

Q: Where can I find the complete syllabus for this subject?

The available chapter-wise syllabus and topic breakdown is indexed in the Syllabus section above, with links to the curriculum PDF source.

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