Photon and Photoelectric Effect with it's graphical analysis

This collection of four detailed documents on Modern Physics covers essential topics related to Photons and the Photoelectric Effect, providing in-depth explanations, step-by-step numerical solutions, and graphical representations. The Photon section includes topics such as energy conversion from electron volts to Joules, numerical problems on photon energy, momentum, and frequency, the relationship between wavelength and energy, and an exploration of Einstein’s Theory of Relativity & Photon Momentum. The Photoelectric Effect section thoroughly explains the photoelectric equation, graphical analysis of stopping potential vs. frequency, threshold frequency and work function calculations, along with numerous numerical problems and real-world applications. These notes are organized, detailed, and exam-focused, making them an essential resource for students looking to strengthen their understanding of modern physics concepts.