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  2. Exams
  3. IIT JEE
  4. Physics
  5. Electromagnetic waves
14 marks

Electromagnetic waves

This chapter introduces electromagnetic waves and their properties, including the electromagnetic spectrum.

4 Topics
15h prep
1.3% subject weight
4 Topics
1

Electromagnetic waves and their characteristics

2m1/10
📌 Key FormulaTransverse waves, travel at speed c in vacuum, consist of oscillating E and B fields.
2

Transverse nature of electromagnetic waves

2m1/10
📌 Key FormulaE and B are perpendicular to each other and to direction of propagation.
3

Electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet. X-rays. Gamma rays)

2m1/10
📌 Key FormulaOrder of increasing frequency / decreasing wavelength.
4

Applications of e.m. waves

2m1/10
📌 Key FormulaRadio: communication, X-ray: medical imaging, etc.