Photoelectric Effect – Key Terms: Work Function, Threshold Frequency (Lecture-1)

Welcome to Lecture-1 of the Photoelectric Effect chapter, one of the most important topics for Class 12, IIT-JEE, NEET & EAMCET Physics.
In this session, we discuss:

🔹 Topics Covered

What is the Photoelectric Effect?

Historical experiments: Hertz & Lenard

Need for quantum theory

Key terms: Work function, Threshold frequency, Stopping potential

Limitations of classical wave theory

Foundation for Einstein’s explanation

This lecture builds the base for understanding quantum behaviour of light and modern physics.

🎯 Who Should Watch?

Class 12 CBSE/ISC students

IIT-JEE & NEET aspirants

Foundation students preparing for competitive exams

Anyone wanting crystal-clear Physics concepts

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