Video Lectures

Chapter 1: INTERFERENCE OF LIGHT

1. Optical Path difference
2. Phase difference
3. Constructive & Destructive Interference, Coherent Sources
4. Division of wavefront & division of amplitude methods
5. Thin Films, Division of Amplitude using thin films
6. Interference in a parallel thin film due to reflected light
7. Interference in parallel thin film due to transmitted light
8. Interference in a wedge shaped film
9. Newton’s Rings
10. Applications of Newton’s rings
11. Numerical Problems

Chapter 2: ULTRASONICS

1. What are Ultrasonics?
2. Magnetostriction Method of producing USW
3. Piezoelectric method of producing USW
4. Detection of Ultrasonic Waves
5. Properties & Applications of Ultrasonic Waves‘
6. Applications of Ultrasonic waves (contd..)
7. Acoustic Diffraction Grating
8. Numerical Problems

Chapter 3: MAGNETISM

1. Terms & Definitions
2. Types of Magnetic Materials
3. Ferromagnetism: Domains, Hysteresis, Soft/hard materials
4. CRO block diagram & working part 1
5. CRO block diagram & working part 2

Chapter 4: SEMICONDUCTORS

1. Band Structure of solids
2. Drift current, Expression for conductivity of charge carriers
3. The Hall Effect
4. Numerical Problems

Chapter 5: LASERS

1. Interaction of Radiation with Matter: Absorption
2. Interaction of radiation with matter: Spontaneous & Stimulated Emission
3. Einstein’s Theory, Conditions for Light Amplification
4. Population Inversion
5. Three Level Pumping Scheme
6. Four Level Pumping Scheme
7. Optical Resonator
8. Properties of Lasers, Applications of Lasers
9. Ruby Laser
10. Helium Neon Laser
11. Numerical Problems

Chapter 6: FIBRE OPTICS

1. Total Internal Reflection
2. Structure of Fibre, Propagation of Light, Structure of OFC
3. Acceptance Angle (derivation)
4. Acceptance Cone, Numerical Aperture, Fractional RI Change, Modes of Propagation
5. Types of Optical Fibres
6. V-number. Applications (Communication, fibrescope)
7. Numerical Problems

Chapter 7: XRAYS

1. Characteristic Xray Spectra
2. Continuous Xray Spectra, Cut-off wavelength
3. Moseley’s Law & its significance, Properties of Xrays
4. Xray diffraction: Bragg’s Law (derivation)
5. Bragg’s Spectrometer, Applications of Xrays
6. Numerical Problems

Chapter 8: WAVE PARTICLE DUALITY

1. Compton Effect, Compton Experiment, Explanation of Compton Effect
2. Compton Shift (derivation)
3. Compton Shift Inferences
4. de Broglie’s hypothesis, matter waves, de Broglie’s wavelength, properties of matter waves
5. Davisson-Germer experiment
6. Numerical Problems