Matter Waves
ICSE · Class 12 · Physics
Summary of Matter Waves for ICSE Class 12 Physics. Key concepts, important points, and chapter overview.
Interactive on Super Tutor
Studying Matter Waves? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for chapter summary and more.
1,000+ Class 12 students started this chapter today
Overview
Matter waves express the wave nature of moving material particles. Radiation shows dual nature, behaving as a wave in interference, diffraction and polarisation, and as a particle in photoelectric effect and Compton effect. The same idea of duality is extended to matter, so moving particles such as
Key Concepts
Radiation behaves as a wave
Radiation behaves as a wave in interference, diffraction and polarisation, but shows particle nature in photoelectric effect and Compton effect. No si
A photon is a packet
A photon is a packet of energy. Each photon has energy E = h v, momentum p = h v / c, kinetic mass h v / c^2, speed c and zero rest mass. Photons are
In photon
In photon-particle collisions, total energy and momentum remain conserved, but the number of photons may not be conserved. A photon may be absorbed by
All moving material particles have wave
All moving material particles have wave nature also. The associated waves are called de-Broglie waves or matter waves.
The wavelength associated with a moving
The wavelength associated with a moving particle is λ = h/p. For non-relativistic motion, p = m v, so λ = h/(m v). Also, λ = h/√(2mK) and for a charge
Learning Objectives
- Understand wave-particle duality of radiation and matter
- Explain the photon picture of light and its properties
- State de-Broglie’s hypothesis for moving particles
- Use de-Broglie relations to calculate wavelength from momentum, kinetic energy and accelerating potential
- Relate de-Broglie wavelength to mass, velocity and kinetic energy
Frequently Asked Questions
What are the important topics in Matter Waves for ICSE Class 12 Physics?
How to score full marks in Matter Waves — ICSE Class 12 Physics?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Matter Waves
Practice Quiz
Test yourself with a quick quiz
Important Questions
Practice with board exam-style questions
Revision Notes
Key points for last-minute revision
Formula Sheet
All formulas in one place
Concept Maps
See how topics connect visually
Study Plan
Step-by-step plan to ace this chapter
Flashcards
Quick-fire cards for active recall
Syllabus
What topics to cover
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full Matter Waves chapter — for free.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 12 Physics.