# Physics Revision Notes for Class 11 Chapter 15 Waves

Class 11 Physics Revision Notes Chapter 15 Waves is the final chapter of class 11 physics which consists of all relevant topics about types and characteristics of waves. Waves being a vast chapter is broken down into smaller concepts such as electromagnetic waves, mechanical waves etc. We will see the definition of these below:

• Electromagnetic waves are one of the waves that are propagated by simultaneous periodic variations of electric and magnetic field intensity and that include radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays
• A mechanical wave is a wave that is not capable of transmitting its energy through a vacuum. Mechanical waves require a medium in order to transport their energy from one location to another

Likewise, students will get to know the important definition of terms such as wavelength, wave velocity, amplitude, frequency etc. The waves equation given here is expressed in a detailed manner for our viewer’s convenience. The topics are systematically arranged for ease and will be fun to read simultaneously.

## Frequently asked Questions on CBSE Class 11 Physics Notes Chapter 15: Waves

Q1

### What is a ‘Mechanical wave’?

A mechanical wave is a wave that is not capable of transmitting its energy through a vacuum.

Q2

### How has the ‘Stationary wave’ got its name?

There is no flow of energy so they are called as Stationary Waves because there is no flow of energy along with the Wave.

Q3

### What are ‘Nodes’ and ‘Antinodes’?

Antinodes are points on a stationary wave that oscillate with maximum amplitude. Nodes are points of zero amplitude and appear to be fixed.