SREENIVASA INSTITUTE of TECHNOLOGY and MANAGEMENT STUDIES (autonomous)
(ENGINEERING PHYSICS Question bank)
I - B.TECH I / II - SEMESTER regulation: r18
Compiled by
FACULTY INCHARGE : Mr.P.V.RAMANA MOORTHY
Designation : Associate professor
Department : Science & humanities
SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES (Autonomous)
DEPARTMENT OF SCIENCE AND HUMANITIES
QUESTION BANK ENGINEERING PHYSICS(18SAH112)
2
II B.Tech I/II Semester L T P/D C
2 1 - 3
18SAH112 ENGINEERING PHYSICS
Pre-requisites: Course on Engineering Physics.
Course Educational Objectives: Course Educational Objectives:
CEO1: To understand the principles and applications optics, Lasers and Optical Fibers in various
Streams of Engineering
CEO2: To analyze the structure of crystals by using X-Ray Diffraction Technique and to study
properties, productions and applications of ultrasonic
CEO3: To develop ideas & mathematical solutions to Quantum mechanics& Semiconductors
CEO4: To recognize the concepts of Superconductors and classification of magnetic materials
CEO5: To Introduce Nano-materials & their applications in various fields of science and
technology
UNIT - 1: PHYSICAL OPTICS, LASERS AND FIBER OPTICS
Physical Optics: Interference in thin films by reflection (Qualitative Analysis) - Newton’s rings
(Qualitative) – Diffraction – Fraunhofer Diffraction at single slit- Diffraction Grating.
Lasers: Laser characteristics – Spontaneous and Stimulated emissions - Population inversion –
Pumping Mechanisms-Solid state laser (Ruby laser) - Gas (He-Ne) laser - Applications of lasers.
Fiber Optics: Principle of Optical Fiber -Structure of optical fiber - Types of optical fibers –Step
Index and Graded Index Fibers- Numerical aperture –Acceptance angle-Fiber optics in
communications (Block Diagram)–Simple Applications.
UNIT - 2: CRYSTAL STRUCTURES AND ULTRASONICS
Crystal Structures: Introduction - Space lattice –Basis-Unit cell - Lattice parameters - Crystal
Systems - Structures of Simple Cubic - Body Centered Cubic - Face Centered Cubic crystals - X-ray
diffraction- Bragg’s law –Laue Method of X-Ray Diffraction.
Ultrasonics: Introduction – Properties of ultrasonic waves - Piezoelectric Effect- Production of
ultrasonic waves by Piezoelectric method -Applications of Ultrasonics.
UNIT - 3: QUANTUM MECHANICS AND SEMI CONDUCTORS
Quantum Mechanics: de Broglie’s Hypothesis- Kinetic Energy and de Broglie wavelength – de
Broglie wavelength of electrons -Properties of Matter waves-Time independent Schrodinger’s wave
equation –Physical Significance of Wave function-Particle in one dimensional potential box (Only
upto Eigen Values of Electrons)
Semiconductors: Intrinsic and extrinsic semiconductors (Qualitative) - Drift and diffusion - Hall
Effect –Applications of Hall Effect- Direct and indirect band gap semiconductors
UNIT - 4: MAGNETIC MATERIALS AND SUPERCONDUCTIVITY
Magnetic Materials: Classification of dia - para - ferro magnetic materials on the basis of magnetic
moment (Qualitative) - Hysteresis curve - soft and hard magnetic materials and Applications
Superconductivity: General properties - Meissner Effect – Type-I and Type-II superconductors -
BCS Theory - Josephson’s effect - Applications of superconductors.
SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES (Autonomous)
DEPARTMENT OF SCIENCE AND HUMANITIES
QUESTION BANK ENGINEERING PHYSICS(18SAH112)
3
UNIT - 5: PHYSICS OF NANOMATERIALS
Nanomaterials: Introduction to Nanomaterials –Types of Nano materials (One dimensional, Two
dimensional and Three dimensional Nano materials) - Significance of nanoscale- surface to, volume
ratio –Quantum Confinement effect-Synthesis of Nanomaterials - Ball milling Method - Chemical
vapour deposition methods –Optical, thermal, mechanical and electrical properties of nano materials -
Applications of Nanomaterials.
Course Outcomes
On successful completion of the course the students will be able to
POs related to COs
CO1 Acquire the knowledge and applications on Optics, LASERS and Fiber Optics. PO1, PO2
CO2 Identify appropriate method for the production of Ultrasonics and their usage and
understanding different crystal structures PO1, PO2
CO3 Develop the skills to solve complex problem in quantum mechanics and
Semiconductors PO1, PO2,PO4
CO4 Analyze the concepts of Superconductors and magnetic materials and their
appropriate applications in the field of Engineering and Technology PO1,PO2
CO5 Apply the theoretical concepts pertaining to Nanomaterials in various fields
engineering and Technology PO1,PO12
Text Books:
1. Engineering Physics, 2011, M.R. Srinivasan, New Age International, Chennai.
2. Engineering Physics, First Edition 2014, K. Thyagarajan, McGraw Hill Publishers, New Delhi.
Reference Books:
1. Concepts of Modern Physics, 8/e, 2007, Aurther Beiser, Tata McGraw Hill Publishers, New
Delhi.
2. Modern Engineering Physics, 2012, A.S. Vasudeva, S. Chand & Co., New Delhi.
3. Materials Science, 1/e, 2004,M. Vijaya and G. Rangarajan, Tata McGraw Hill Publishers, New
Delhi .
4. Physics, Part I and II(Part I 5/e,2002, Part II 5/e,2001), Halliday and Resnick, John Wiley &
Sons (Asia)
5. R5 :Engineering Physics, 7/e, 2006, Gaur & Gupta, Dhanpati Rai Publications, New Delhi .
SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES (Autonomous)
DEPARTMENT OF SCIENCE AND HUMANITIES
QUESTION BANK ENGINEERING PHYSICS(18SAH112)
4
QUESTION BANK
Question
No. Questions
PO
Attainment
UNIT – 1 PHYSICAL OPTICS, LASERS AND FIBER OPTICS PART-A (Two Marks Questions)
1 Define interference. PO1
2 Defferentiate between constructive interference and destructive interference. PO1
3 Define constructive interference. PO1
4 Define destructive Interference PO1
5 Define coherence. PO1
6 List two important conditions to produce interference. PO1
7 Name the type of light used in Newton’s rings formation. PO1
8 Describe the conditions to obtain dark and bright rings? PO1
9 Explain Why the central spot is dark in the Newton’s rings formed by reflected light . PO1
10 Explain why Newton’s rings consists of concentric rings . PO1
11 Name the expressions for diameters of dark and bright fringes in Newton’s rings. PO1
12 Define diffraction? PO1
13 Differentiate between Fresnel’s diffraction and Frauhnofer’s diffraction PO1
14 Define diffraction grating? PO1
15 Summarize important properties of LASER. PO1
16 Differentiate between spontaneous emission and stimulated emission. PO1
17 Explain What is population inversion? PO1
18 Name the important components of laser device. PO1
19 List out applications of Lasers. PO1
20 Who invented Helium-Neon Laser. PO1
21 Explainwhat is an optical fiber? PO1
22 Name the principle of optical fiber? PO1
23 Name the parts in optical fiber. PO1
24 Define numerical aperture. PO1
25 Define acceptance angle. PO1
26 List out the applications of optical fiber. PO1
27 Name the types of optical fibers. PO1
28 List the advantages of optical fibers? PO1
29 Differentiate between single mode step index and Multi mode Step index fibers. PO1
30 Contrast step index and graded index fibers. PO1
PART-B (Ten Marks Questions)
SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES (Autonomous)
DEPARTMENT OF SCIENCE AND HUMANITIES
QUESTION BANK ENGINEERING PHYSICS(18SAH112)
5
1 Explain the phenomena of interference in two parallel thin films. PO1, PO2
2 Derive an expression for the path difference in two parallel thin films. PO1, PO2
3 Describe Newton’s Rings with suitable theory. PO1, PO2
4 Derive an expression for the radius of curvature of the plano- convex lens in Newton’s rings
experiment. PO1, PO2
5 Distinguish between Fresnel diffraction and Fraunhofer diffraction. PO1, PO2
6 Explain Fraunhofer diffraction due to a single slit with necessary theory. PO1, PO2
7 What is Diffraction grating? Explain. PO1, PO2
8 Differentiate between diffraction and interference PO1, PO2
9
Explain the terms
Absorption
Spontaneous emission
Stimulated emission
PO1, PO2
10 Explain the terms Pumping mechanism and Population inversion PO1, PO2
11 Explain the construction and working of a He-Ne Laser with suitable diagrams. PO1, PO2
12 Explain the construction and working of Ruby Laser With the help of suitable diagram. PO1, PO2
13 Contrast between the spontaneous and stimulated emission PO1, PO2
14 List the general characteristics of Lasers. PO1, PO2
15 Summarize applications of Laser PO1, PO2
16 What is the acceptance angle of an optical fiber and derive an expression for it. PO1, PO2
17
Define the following terms for an optical fiber
(i) Cone acceptance
(ii) Numerical aperture
(iii) acceptace angle And
(iv) fractional refractive index change.
PO1, PO2
18 What is total internal reflection? Discuss its importance in optical fibers. PO1, PO2
19 Describe the different types of optical fibers with neat Diagrams. PO1, PO2
20
Defferentiate between light propagation in
(i)Step Index Fiber
(ii)Graded Index fiber.
PO1, PO2
21 Explain in detail the optical communication system with a neat block diagram. PO1, PO2
22 Summarize applications of fibers. PO1, PO2
SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES (Autonomous)
DEPARTMENT OF SCIENCE AND HUMANITIES
QUESTION BANK ENGINEERING PHYSICS(18SAH112)
6
Question
No. Questions
PO
Attainment
UNIT – 2: CRYSTAL STRUCTURES AND ULTRASONICS PART-A (Two Marks Questions)
1 What is space lattice? PO1
2 Define unit cell. PO1
3 Define nearest neighbor distance. PO1
4 Define co-ordination number. PO1
5 Define packing fraction PO1
6 Define Braggs Law. PO1
7 Tabulate the packing fractions for SCC,BCC and FCC crystals. PO1
8 What are ultrasonic waves? PO1
9 What are the main uses of ultrasonics? PO1
10 Define piezoelectric effect? PO1
11 Define Inverse piezoelectric effect? PO1
12 Name the methods of producing ultrasonic waves. PO1
13 List any two properties of Ultrasonic waves. PO1
PART-B (Ten Marks Questions)
1 Show that FCC is most closely packed of the three cubic structures by working out the
packing factors. PO1, PO2
2 Obtain the packing factor expression of SCC ,BCC and FCC structures. PO1, PO2
3 Explain Bragg’s law of X-Ray diffraction. PO1, PO2
4 Derive Bragg’s law. PO1, PO2
5 Describe Laue’s method of X-Ray diffraction of crystal structures. PO1, PO2
6 Describe the seven crystal systems in detail with neat diagrams. PO1, PO2
7 Define Bravais Lattice.
Explain the terms
(a) Basis (b) Space Lattice and (c) Unit cell. PO1, PO2
8 Obtain the packing factor expression of SCC ,BCC and FCC structures. PO1, PO2
9 Explain Bragg’s law of X-Ray diffraction. PO1, PO2
10 Derive Bragg’s law. PO1, PO2
11 Explain the production of ultrasonic waves by using piezo electric oscillator. PO1,PO2
SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES (Autonomous)
DEPARTMENT OF SCIENCE AND HUMANITIES
QUESTION BANK ENGINEERING PHYSICS(18SAH112)
7
Question
No. Questions
PO
Attainment
UNIT – 3: QUANTUM MECHANICS AND SEMI CONDUCTORS
PART-A (Two Marks Questions)
1 DefineDe Broglie’s hypothesis. PO1
2 List two properties of matter waves PO1
3 Define Heisenberg’s uncertainty principle. PO1
4 Explain the significance of wave function. PO1
5 Recite Schrödinger’s time independent equation. PO1
6 Determine wavelength of an electron accelerated through a potential of 1600V. PO1
7 Outline the expression for Eigen values of an electron in one dimensional box. PO1
8 Discuss intrinsic semiconductors. PO1
9 Categorize extrinsic semiconductors. PO1
10 Define Hall Effect. PO1
11 Define the terms drift and diffusion in semiconductors. PO1
12 Formulate Einstein’s relation. PO1
13 List applications of Hall Effect. PO1
14 Differentiate between direct band gap and indirect band gap semiconductors. PO1
15 Describe a PN junction diode. PO1
PART-B (Ten Marks Questions)
1 Explain De Broglie’s hypothesis. PO1,
PO2,PO4
2 Define matter waves? Explain their properties. PO1, PO2
3
Show that the wavelength associated with an electron of mass ‘m’ and kinetic energy ‘E’ is
given by mE
h
2
PO1, PO2,
PO4
4
Show that the wavelength of an electron accelerated by a potential difference ‘v’ volts, is
mV
101027.12 for non relativistic case.
PO1, PO2,
PO4
5 Explain the difference between matter waves and an electromagnetic wave. PO1,
PO2,PO4
6 Explain the concept of particle wave duality and obtain an expression for the wavelength of
matter waves. PO1, PO2
7 Describe time independent Schrodinger’s wave equation for free particle. PO1,
PO2,PO4
8 Show that the energies of a particle in a one dimensional box are quantized. PO1, PO2,
PO4
9 Explain the physical significance of wave function. PO1,
PO2,PO4
10 Explain Heisenberg’s uncertainty principle. PO1,
PO2,PO4
SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES (Autonomous)
DEPARTMENT OF SCIENCE AND HUMANITIES
QUESTION BANK ENGINEERING PHYSICS(18SAH112)
8
Question
No. Questions
PO
Attainment
UNIT – 4: MAGNETIC MATERIALS AND SUPERCONDUCTIVITY PART-A (Two Marks Questions)
1 Define magnetic susceptibility. PO1
2 Define magnetic permeability. PO1
3 Describe diamagnetic materials. PO1
4 Describe paramagnetic materials. PO1
5 Describe ferromagnetic materials. PO1
6 Describe Antiferro materials PO1
7 Describe Ferri magnetic materials. PO1
8 Define Bohr magneton. PO1
9 Explain magnetic hysteresis. PO1
10 Differentiate Soft and Hard magnetic materials. PO1
11 List the examples for soft and hard magnetic materials. PO1
12 List the applications of soft and hard magnetic materials. PO1
13 Define critical temperature. PO1
14 Define critical magnetic field. PO1
15 Define Meissner effect. PO1
16 Differentiate between Type-I and Type-II Superconductors. PO1
17 List Examples for Type-I and Type-II Superconductors. PO1
18 List the applications of Superconductors. PO1
19 Describe Josephson’s effect. PO1
20 Define AC Josephson’s effect. PO1, PO2
21 Define DC Josephson’s effect. PO1, PO2
22 Define Superconductivity. PO1, PO2
23 Quote the Transition temperatures for Lead and Tin. PO1, PO2
PART-B (Ten Marks Questions)
1
Define following terms
a) Magnetic field
b) Magnetic susceptibility )(
c) Magnetic permeability )(
d)Magnetic moment
PO1, PO2
2 Derive an expression for magnetic moment of an electron due to its orbital motion PO1, PO2
3
Define the following terms.
( a ) Magnetization
( b ) Bohr Magneton
(c ) Magnetic moment due to Nuclear Spin
(d) Magnetic moment due to spin of electrons
PO1, PO2
4 Explain in detail the Magnetic Hysteresis loop. Give its Application. PO1, PO2
5 Differentiate between Hard and Soft Magnetic Materials. PO1, PO2
6 Classify Magnetic materials on the basis of magnetic moment. PO1, PO2
7
Define the following terms.
(a) Relative Permeability
(b) Magnetic Flux Density
(c) Magnetic Flux and (d) Magnetizing Field Strength.
PO1, PO2
8 List out the applications of Soft and Hard magnetic materials. PO1, PO2
SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES (Autonomous)
DEPARTMENT OF SCIENCE AND HUMANITIES
QUESTION BANK ENGINEERING PHYSICS(18SAH112)
9
9 Describe various magnetic materials on the basis of magnetic moment. PO1, PO2
10 Show that χ = µr-1 PO1, PO2,
12 Describe superconductors? List out the general properties of superconductors. PO1, PO2
13
Define the following terms
Superconductivity
Critical temperature
Critical magnetic field
Critical current
PO1, PO2
14 Explain Meissner effect. PO1, PO2
15 Describe the difference between the Type-I and Type-II superconductors. PO1, PO2
16 Differentiate between conductivity and superconductivity PO1, PO2
17 Explain general properties of super conductors. Give two applications PO1, PO2
18 Explain dc and ac Josephson’s effect. PO1, PO2
20 Describe Josephson’s junction and give its applications. PO1, PO2
21 Explain the BCS theory in detail. PO1, PO2
22 Explain general properties of super conductors . Give two applications PO1, PO2
SREENIVASA INSTITUTE OF TECHNOLOGY AND MANAGEMENT STUDIES (Autonomous)
DEPARTMENT OF SCIENCE AND HUMANITIES
QUESTION BANK ENGINEERING PHYSICS(18SAH112)
10
Question
No. Questions
PO
Attainment
UNIT – 5: PHYSICS OF NANOMATERIALS PART-A (Two Marks Questions)
1 Define nanomaterials PO1, PO12
2 Describe the significance of nanoscale PO1, PO12
3 Explain quantum confinement. PO1, PO12
4 Name the Types of Nano materials. PO1, PO12
5 Show how surface to volume ratio change for nanoscale PO1,PO12
6 Show how the thermal properties vary in nanomaterials. PO1, PO12
7 List the physical properties vary in nanomaterials. PO1,PO12
8 Name the two methods for nano materials preparation. PO1,PO12
9 Explain how the optical properties vary in nanoparticels. PO1,PO12
10 List two applications of nanomateraials. PO1,PO12
11 Explain how the magnetic properties vary in nanomaterials? PO1,PO12
12 Explain how the mechanical properties vary in nanomaterials? PO1,PO12
13 Explain how the electrical properties vary in nanomaterials? PO1,PO12
PART-B (Ten Marks Questions)
1 Describe nanomaterials? Give their properties. PO1, PO12
2 Describe fabrication of nanomaterials (top down and bottom up approaches ) PO1, PO12
3 Describe in detail the ball milling method of nanomaterials fabrication. PO1, PO12
4 a) Explain how nanometerials are fabricated using chemical vapour deposition method.
b) Mention three application of nanomaterials. PO1, PO12
5 Explain the Basic principle of nanomaterials. PO1, PO12
6 List out the applications of nannomaterials. PO1, PO12
7 Explain the physical and Chemical properties of nanomaterials. PO1, PO12
***GOOD LUCK***
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