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Physics of Electronics Materials — Minor 1 2026 question paper

MMMUT Electronics and Communication Engineering previous year question paper for Physics of Electronics Materials (BSM 226), semester 3, Minor 1 2026. All 8 questions are listed below, each with a written answer on Nexsus.

Paper details

  • Subject: Physics of Electronics Materials (BSM 226)
  • Branch: Electronics and Communication Engineering
  • Semester: 3
  • Exam: Minor 1 2026
  • Questions: 8

Questions asked in Physics of Electronics Materials Minor 1 2026

  1. Q1(a). Write down the number of atoms in a unit cell and coordination number of SC, BCC and FCC lattice. Find out atomic packing factor (APF) for FCC lattice [6 marks]
  2. Q1(b). How many crystal systems and Bravais lattices are possible. Draw neat and clean sketch for any two possible Bravais Lattices [4 marks]
  3. Q1(c). Discuss each step to find out the miller indices of a lattice plane. Find the Miller indices of a set of parallel planes which make intercepts in the ratio 3a: 4b on the X- and Y-axes and are parallel to Z-axis, a, b, c being primitives the lattice [4 marks]
  4. Q2(a). What is meant by crystal imperfections? What is point defect in crystal lattice and describe two types of point defects [6 marks]
  5. Q2(b). Find out the dispersion relation of phonons for 1-dimensional monatomic lattice [4 marks]
  6. Q2(c). If the spring constant for 1-d monatomic lattice is 6.68 x 10^-25 N/m and the mass of an atom is 1 a.m.u, find out the natural cut off frequency. (1 amu = 1.67 x 10^-27 kg) [4 marks]
  7. QQ. 1. Attempt any two parts of the following. Q.1 (a) is compulsory
  8. QQ. 2. Attempt any two parts of the following. Q.2 (a) is compulsory