You must complete Gravitational Field to unlock this Lesson.



  1. The Concept of Electromagnetic Waves
  2. The Concept of Electromagnetic Field
  3. Fleming’s Left Hand Rule
  4. Force between Two Parallel Curent-carrying Conductors
  5. Applications of Electromagnetic Field
  6. Electromagnetic Induction
  7. The Laws of Electromagnetic Induction
  8. Eddy Currents
  9. Advantages and Disadvantages of Eddy Currents


The Concept of Electromagnetic Waves

Unlike mechanical waves, electromagnetic waves are waves that require no material medium for propagation. Thus, they can propagate through a vacuum or free space.

The human eye can only see light of which the wavelength lies between 3.8 ×10– 7m and 7.2 ×10– 7m. Other examples of electromagnetic radiation differ from visible light  only in wavelength and in the ways of producing them. However, they all have the same velocity of value 3.0 ×108m/s.


  1. What are electromagnetic waves?
  2. Differentiate electromagnetic waves from mechanical waves.
  3. What is the common speed value of all electromagnetic waves?
  4. List the components in the electromagnetic spectrum.

Lesson tags: Physics Lesson Notes, Physics Objective Questions, SS3 Physics, SS3 Physics Evaluation Questions, SS3 Physics Evaluation Questions First Term, SS3 Physics First Term, SS3 Physics Objective Questions, SS3 Physics Objective Questions First Term
Back to: PHYSICS – SS3 > First Term
© [2022] Spidaworks Digital - All rights reserved.
error: Alert: Content is protected !!