(i) Ray Optics and Optical Instruments
Ray Optics:
Reflection of light by spherical mirrors, mirror formula, refraction of light at plane surfaces, total internal reflection and its applications, optical fibres, refraction at spherical surfaces, lenses, thin lens formula, lens maker’s formula, magnification, power of a lens, combination of thin lenses in contact, combination of a lens and a mirror, refraction and dispersion of light through a
prism. Scattering of light.
Optical instruments:
Microscopes and astronomical telescopes (reflecting and refracting) and their magnifying powers and their resolving powers.
GEOMETRICAL OPTICS – Videos
- Introduction to Geometrical Optics
- Refraction (Basic Concept)
- Refraction of Light (Part 2)
- Real Depth and Apparent Depth
- Total Internal Reflection
- Application of TIR
- Experimental Demonstration of TIR
- Optical Fiber
- Refraction at spherical surface
- Numerical Problems on Refraction at Spherical Surface
- Lens Maker's Formula
- Numerical Probs on Lens Maker's Formula
- Lens Formula
- Numerical Problems on Lens Formula
- Combination of Lenses and Power
- Displacement Method of Lens
- Prism (Part1)
- Prism (Part2)
- Dispersion of Light
- Combination of Prisms
- Optical Instruments Introduction
- Telescope
- Simple Microscope
- Compound Microscope
- Defects in a Lens and Reflecting Type Telescope
- Combination of lenses and mirrors
- Silvering of Lens Surfaces
(ii) Wave Optics
Wave front and Huygen’s principle. Proof of laws of reflection and refraction using Huygen’s principle. Interference, Young’s double slit experiment and expression for fringe width(β), coherent sources and sustained interference of light, Fraunhofer diffraction due to a single slit, width of central maximum; polarisation, plane polarised light, Brewster’s law, uses of plane polarised light and Polaroids.
WAVE OPTICS – Videos
- Waves and their Basic characteristics
- Huygen' Principle and Explanation of Refraction
- Explanation of Reflection
- Huygen's Principle - Additional Topics
- Introduction to Interference of light
- Young's Double Slit Experiment (YDSE)
- Numerical Problems on Interference
- Diffraction (Introduction)
- Explanation of Diffraction
- Numerical Problems on Diffraction
- Fresnel's Distance
- Polarisation [part 1]
- Polarisation [part 2]
- Numerical Problems on Polarisation
