Class 12 Physics UNIT 8 Dual Nature of Radiation and Matter

Elextron Microscope



Class 12 Physics

UNIT 8 Dual Nature of Radiation and Matter

Introduction

Electron Emission

Hertz, Hallwachs and Lenard’s observation

Effect of intensity of incident light on photoelectric current

Effect of potential difference on photoelectric current

Effect of frequency of incident light on stopping potential

Laws of photoelectric effect

Concept of quantization of energy

Example 8.1

Concept of quantization of energy

Particle nature of light: Einstein’s explanation

Einstein’s explanation of photoelectric equation

Photo electric cells and their applications

Example 8.2

Example 8.3

Example 8.4

Example 8.5

De Broglie wave length

Davisson – Germer experiment

Electron Microscope

Example 8.6

Example 8.7

Example 8.8

Discovery of X- Rays

Production of x-rays

X-ray spectra

Applications of x-rays

Example 8.9

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