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Engineering Physics — Minor 2 2019 question paper

MMMUT Electrical Engineering previous year question paper for Engineering Physics (BSM-177), semester 1, Minor 2 2019. All 24 questions are listed below, each with a written answer on Nexsus.

Paper details

  • Subject: Engineering Physics (BSM-177)
  • Branch: Electrical Engineering
  • Semester: 1
  • Exam: Minor 2 2019
  • Questions: 24

Questions asked in Engineering Physics Minor 2 2019

  1. Q1(a). What is lattice plane? How are the lattice planes described in terms of Miller indices? [2 marks]
  2. Q1(b). Define unit cell. Obtain the Miller indices of a plane which intercepts at (a, b/2, 3c) in an SC unit cell. [2 marks]
  3. Q1(c). What is wave-particle duality? [2 marks]
  4. Q1(d). State and explain Heisenberg's uncertainty principle. [2 marks]
  5. Q1(e). Write the Maxwell's equation in integral and differential forms. Explain each equation. [2 marks]
  6. Q1(f). What is the band theory of solids? Classify conductors, insulators and semiconductors on the basis of band theory of solids. [2 marks]
  7. Q1(g). What is mobility? How it varies with life time of electron and its effective mass? [2 marks]
  8. Q2(a). What is Bravias lattice. For SC, FCC, and BCC, determine the following: (1) lattice point per unit cell (2) nearest neighbour distance (3) atomic packing factor. [5 marks]
  9. Q2(b). Derive Bragg's equation for reflection of X-rays by crystal planes. The angle of reflection for monochromatic X-rays for a crystal whose atomic spacing is 2.0 A is 30 degrees. Calculate the wavelength of X-rays. [5 marks]
  10. Q2(c). Discuss the seven types of crystal systems? How are they different from each other? [5 marks]
  11. Q3(a). What is the importance of Schrodinger wave equations? Deduce time-independent Schrodinger wave equation? [5 marks]
  12. Q3(b). Describe the Davisson and Germer experiment to demonstrate the wave nature of a particle. [5 marks]
  13. Q3(c). Write energy eigen value expression for a particle in one dimensional box. Calculate the values of energy of an electron in a one-dimensional box with impenetrable walls of length 1 A for n = 1 and n = 2. [5 marks]
  14. Q4(a). Write Maxwell's equations in free space. Show that the velocity of plane electromagnetic waves in the free space is given by C = 1/sqrt(mu_0 epsilon_0), where mu_0 and epsilon_0 are permittivity and permeability of free space respectively. [5 marks]
  15. Q4(b). Deduce Maxwell's four equations in free space. Explain the concept of Maxwell's displacement current and show how it led to the modification of Ampere's law. [5 marks]
  16. Q4(c). Define skin depth or depth penetration. The maximum electric field in a plane electromagnetic wave is 102 N/C. The wave is going in the X-direction and the electric field is in the Y-direction. Find the maximum magnetic field in the wave in its direction. [5 marks]
  17. Q5(a). A sample of intrinsic germanium has 0.36 and 0.17 m^2/V-s electron and hole mobilities respectively. If the density of electrons and holes are each equal to 2.5 x 10^18 per meter cube, find the electrical conductivity and resistivity of the sample. [5 marks]
  18. Q5(b). Explain the variation in magnetization with applied magnetic field in Type I and Type II superconductors. Give some examples of both types. Write down characteristics of superconductor. [5 marks]
  19. Q5(c). What is nanoscience and nanotechnology? Differentiate between top-down and bottom-up method of nanoparticle synthesis. [5 marks]
  20. QQ.1. Attempt any Five parts of the following. (All Unit)
  21. QQ.2. Attempt any Two parts of the following. (Unit-I)
  22. QQ.3. Attempt any Two parts of the following. (Unit-II)
  23. QQ.4. Attempt any Two parts of the following. (Unit-III)
  24. QQ.5. Attempt any Two parts of the following. (Unit-IV)