Basic Qualification · B-007 Radio wave propagation · B-007-004-010
Quel effet ont la réfraction, la réflexion et la rotation de Faraday sur une onde radio?
- AAugmenter la largeur de bande occupée
- BChanger la longueur d'onde
- CChanger la polarisation
- DAugmenter la vitesse de propagation
Correct answer: C — Changer la polarisation. Question tirée de la banque officielle d'ISDE.
Why
When a radio wave bounces off surfaces, bends through the atmosphere, or twists due to Earth's magnetic field, its orientation shifts. The full explanation — and one for every question — is in Pro.
Practise this section
Radio wave propagation is section B-007 of the Basic exam: How signals travel: the ionosphere and its layers, skip, ground wave, sporadic E, and which bands work when.
Drill B-007 — free, no account