Notes of Chapter 09: Physical Optics of “Physics XI” for FSc Part 1 published by Punjab Textbook Board, Lahore. These notes are very helpful to prepare Physics paper of FSc Part 1 for Federal Board, Multan Board, Faisalabad Board, Sargodha Board, Gujranwala Board, DG Khan Board, Rawalpindi Board or any other board of Punjab, Pakistan.

It is the branch of physics which deals with the production, propagation and properties of light.

• Optics
• Wavefronts
• Huygen's Principle
• Interference of Light Waves
• Young's Double Slit Experiment
• Interference in thin films
• Newton's Rings
• Michelsons Interferometer
• Diffraction of Light
• Diffraction due to Narrow Slit
• Diffraction Grating
• Diffraction of X-Rays by crystals
• Differecne b/w Interference and Diffraction
• Polarization