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ENGINEERING PHYSICS — Major (End Semester) 2025 question paper

MMMUT Computer Science and Engineering previous year question paper for ENGINEERING PHYSICS (BSM-131), semester 1, Major (End Semester) 2025. All 24 questions are listed below, each with a written answer on Nexsus.

Paper details

  • Subject: ENGINEERING PHYSICS (BSM-131)
  • Branch: Computer Science and Engineering
  • Semester: 1
  • Exam: Major (End Semester) 2025
  • Questions: 24

Questions asked in ENGINEERING PHYSICS Major (End Semester) 2025

  1. Q1. Attempt any Five parts of the following.
  2. Q1(a). Show that the ratio of the intensities in a Fraunhofer diffraction phenomenon from a single slit can be given by I0:I1:I2:...:In=1:0.045:0.016:... [2 marks]
  3. Q1(b). Define polarization of light and explain it using appropriate neat and clean diagram. What do you mean by linearity, circularly and elliptically polarized light? Explain. [2 marks]
  4. Q1(c). Write down the Broglie hypothesis and explain it. What will be the ratio of the Broglie wavelengths of an electron and a neutron, if both have the same kinetic energy? [2 marks]
  5. Q1(d). Derive time dependent Schrodinger equation. Explain the physical significance of wave function giving one appropriate example. Write energy and momentum operators and explain their significance. [2 marks]
  6. Q1(e). Describe Davisson-Germer experiment with the help of neat and clean diagram. How could it prove the wave nature of kinetic electrons? [2 marks]
  7. Q1(f). A hydrogen atom is 5.3 × 10^-11 m in radius. Use the uncertainty principle to estimate the minimum energy an electron can have in the atom? [2 marks]
  8. Q1(g). Show that the ratio of energies of a particle trapped in a one dimensional box is 1:4:9... [2 marks]
  9. Q2. Attempt any Two parts of the following.
  10. Q2(a). Write down Maxwell's electromagnetic equations in integral and differential forms for free space and explain their physical significance. [5 marks]
  11. Q2(b). Derive the wave equation for an electromagnetic wave and show that the electromagnetic waves travel with a constant speed c(3 × 10^-8 m/s) [5 marks]
  12. Q2(c). Derive the first and second Maxwell equations and explain their physical significance. [5 marks]
  13. Q3(a). Derive ∇ × E = -∂B/∂t [5 marks]
  14. Q3(b). Write down the statement of Poynting theorem and explain the physical significance of the terms in it. If a radio transmitter emits an electromagnetic wave with electric field 3 V/m and a magnetic field of 2μT, calculate the magnitude of the Poynting vector at a point where the angle between the electric and magnetic fields is 45°. [5 marks]
  15. Q3(c). Show that ∇ ⋅ (∇ × E) = 0; Here E is an electric field. [5 marks]
  16. Q4. Attempt any Two parts of the following.
  17. Q4(a). 1. Write a comment on intrinsic and extrinsic semiconductor. How do their conducting properties differ with each other, explain. II. Write a comment on direct and indirect bandgap semiconducting material and explain with the help of neat and clean diagram. Give one example of each. [5 marks]
  18. Q4(b). Define superconductivity and account reasons for its origin? Briefly explain on the basis of BCS theory. Classify superconductors as Type-I and Type-II superconductors and explain the difference in their magnetic properties. [5 marks]
  19. Q4(c). Derive London first and second equations for superconductivity and explain their physical significance. [5 marks]
  20. Q5. Attempt any Two parts of the following.
  21. Q5(a). Explain the origin of bandgaps in silicon with the help of neat and clean diagram. [5 marks]
  22. Q5(b). The critical field for niobium is 1 × 10^5 amp/m at 8 K and 2 × 10^5 amp/m at absolute zero. Find the transition temperature of the element. [5 marks]
  23. Q5(c). Classify nanomaterials on the basis of their dimensions and give one appropriate example of each. Write down five potential applications of nanomaterials. [5 marks]
  24. QQ3.. Attempt any Two parts of the following.