The document outlines the syllabus for an Engineering Physics course. It is divided into 5 units that cover topics like electron ballistics and optics, lasers, semiconductor physics, quantum physics, and experiments. Unit 2 focuses on optics and interference, discussing concepts like thin film interference, Newton's rings, antireflection coatings, and applications to surface testing. Key formulas are provided for thin film interference, fringe width, Newton's rings, and antireflection coatings. Examples of calculations using these formulas are also presented.

1. ENGINEERING PHYSICS
Dr Bhakti Patankar Rajvaidya
1

2. Unit Contents Hours
I
Electron Ballistics and Optics: Trajectories of electron in uniform Electric and Magnetic field
(Qualitative), Bethe’s law, Electron Lens, Devices- Electron microscope (Theoretical), CRO
4
II
Optics: Interference-Interference in uniform & non-uniform thin films, AR Coatings, Surface
Testing, Branch specific applications.
4
III
LASER: Characteristics, Spatial and Temporal Coherence, Einstein Coefficient & its significance,
Basic requirements of Laser, Components of laser, He-Ne, Semiconductor laser and Branch Specific
applications.
6
IV
Semiconductor Physics: Review of basic Semiconductor physics, Hall Effect, Review of working of
PN junction diode with reference to energy level diagrams.
Optoelectronic Devices:-Types of optoelectronic devices, LED-Types & working principle, OLED,
properties & comparisons, OLED applications, PIN Photodiode, Solar Cell, Branch specific
applications as sensors and detectors
6
V
Quantum Physics: Blackbody Radiation, Compton Effect, Wave particle duality: De Broglie
wavelength, Group and Phase velocity, Heisenberg’s Uncertainty principle & its applications,
Schrödinger’s Mechanics: Physical interpretation of Wave Function, Elementary Idea of Operators,
Solution of Schrodinger equation for simple boundary value problems, Tunneling, Applications-
TEM,SEM, Effect of Quantum constriction on properties of nanomaterials
6
Syllabus
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
2

3. Text
Books
1.
Physics for Engineering, Dr. Bhavana P Butey, Oxford University
Press, 2017, First Edition
EBooks 1. https://www.phindia.com/Books/EBooks
Reference
Books
1.
Fundamentals of Physics, David Halliday and Robert Resnik, New Age,
1994
2. Nanotechnology, Dr. Sulbha K Kulkarni, Capital Publishing Co., 2011
Online TL
Material
1. https://nptel.ac.in/courses/104/104/104104085/
Books
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ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur

4. Sr. No. Name of Experiments
1 Application of CRO: To measure amplitude of AC voltage and determine unknown frequency using CRO
2 Determination of diameter of thin wire using interference by using Air Wedge
3 Determination of Wavelength of Laser source by Newton’s ring.
4 Determination of Hall Coefficient of an Extrinsic Semiconductor by arranging it in a Hall Effect. Experiment.
5 Determination of Band gap of an Intrinsic semiconductor by using PN junction diode
6 PN junction diode as a rectifier-Find efficiency & ripple factor by using CRO
7 Application of diode: Voltage regulation by Zener diode.
8 Study of various Photo detectors as sensors
9 Application of interference: Determination of radius of curvature of plano-convex lens using Newton’s ring set up.
10 Application of interference: Determination of refractive index using Newton’s ring set up.
11 Laser: Determination of Birefringence of double image prism.
12 Determination of Band gap by four probe method.
13 Application of Diode: Determination of Planks Constant by using LEDs.
14 Comparison of V-I characteristics of various diodes.
15 Application of CRO: Determination of phase difference between two AC signals.
Practical
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ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur

5. Unit II: Optics
Interference
Remember
Young’s
Double Slit
Experiment
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ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur

6. Unit II: Optics
Interference
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ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur

7. Unit II: Optics
Interference By definition and conditions
Coherent, Monochromatic, Narrow, Close and having same intensities.
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ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur

8. Unit II: Optics
Interference
type:
Constructive
and
Destructive
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ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur

9. Unit II: Optics
Interference type: General Mathematical Conditions
Constructive : Path Difference Δ = mλ i.e. integral
multiple of wavelength
and
Destructive : Path Difference Δ = (2m+1)λ/2 i.e. odd
multiple of half wavelength
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ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur

10. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
Interference Methods:
Division of Wave front
and
Division of Amplitude
10

11. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
Division of Amplitude
Interference through “Thin Films”
Films having thickness comparable to the wavelength (in micrometers
for light)
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12. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
Interference Equation in Thin Films
12
When we equate this equation of path difference to
conditions of Maxima and Minima we get…

13. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
Interference through “Thin Films”
Showing Phase change
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14. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
Interference through “Thin Films”
Uniform (parallel) and non-uniform thickness (Wedge Shaped)
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15. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
Condition of Brightness and Darkness in Thin Films
are reversed because of additional phase change.
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Constructive :
Path Difference Δ = 2μt cosr = (2m+1)λ/2 i.e. odd
multiple of half wavelength
and
Destructive :
Path Difference Δ = 2μt cosr = mλ i.e. integral
multiple of wavelength

16. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Numerical on Maxima and Minima
RI of film (1.2)

17. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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nm

18. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Interference in Thin Films (Air Wedge)

19. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Expression for Fringe Width in Thin Films (Air Wedge)
t = L θ

20. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Numerical on Fringe Width

21. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Numerical on Fringe Width

22. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Interference in Thin Films (Newton’s Rings)

23. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Newton’s Rings

24. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Formulae in Newton’s Rings
Diameter of mth Dark Ring
Refractive Index of Liquid

25. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Numerical in Newton’s Rings

26. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Numerical in Newton’s Rings

27. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Numerical in Newton’s Rings

28. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Antireflection Coatings

29. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Antireflection Coatings

30. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Antireflection Coatings Conditions
Refractive index of the
coating should be
Minimum thickness
of the coating
Condition of
Amplitude
Condition of
Phase

31. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Antireflection Coatings Numerical

32. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Antireflection Coatings Numerical

33. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Antireflection Coatings Numerical

34. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Antireflection Coatings Numerical

35. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Applications of Interference: Surface Testing

36. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Applications of Interference: Surface Testing

37. Unit II: Optics
ENGINEERING PHYSICS Bhakti Patankar Rajvaidya G H Raisoni College of Engineering, Nagpur
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Applications of Interference: Surface Testing