Basic Qualification · B-005 Basic electronics and theory · B-005-007-006
Qu'arrive-t-il à la longueur d'onde d'un signal lorsqu'on augmente sa fréquence?
- AElle diminue
- BElle augmente
- CElle diminue proportionnellement au carré de la fréquence
- DElle augmente proportionnellement au carré de la fréquence
Correct answer: A — Elle diminue. Question tirée de la banque officielle d'ISDE.
Why
When a radio wave's frequency goes up, the distance between its peaks, called the wavelength, must get shorter because the speed of light stays constant. The full explanation — and one for every question — is in Pro.
Practise this section
Basic electronics and theory is section B-005 of the Basic exam: The theory: Ohm's law, power, series and parallel circuits, AC and DC, frequency and wavelength, decibels, and the metric prefixes the exam leans on.
Drill B-005 — free, no account