class 12 physics notes unit 5 chapter 8 electromagnetic waves

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Electromagnetic Waves 

A wave originated by changing electric field and magnetic field is called electromagnetic waves. These waves are transverse in nature and propagate in a direction perpendicular to both electric and magnetic field. Electric and magnetic field are also perpendicular to each other.

These waves do not require any material medium for their propagation.

class 12 physics notes unit 5 chapter 8 electromagnetic waves