The radio waves of constant amplitude are called:
Correct answer: B. Carrier waves
- A. Modulated waves
- B. Carrier waves
- C. Standing waves
- D. Rectified waves
Explanation
Such waveforms are used in modulation. Modulation is the process of converting data into radio waves by adding information to an electronic or optical carrier signal. A carrier wave is the continuous electromagnetic radiation of constant amplitude and frequency that is given out by a transmitter.
This question appeared on the ETEA MDCAT 2006 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Electromagnetic Waves
Electromagnetic waves consist of mutually perpendicular, oscillating electric and magnetic fields that also remain perpendicular to the direction of propagation. They travel through vacuum at the speed of light and include radio waves, microwaves, infrared, visible, ultraviolet, X-rays and gamma rays. Unlike mechanical waves, they do not require a material medium.
Practise Alternating Current
592 free Alternating Current MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electromagnetic Waves questions
Which type of electromagnetic radiation has the longest wavelength?
In a microwave oven, the wave produced has a wavelength of 12 cm at a frequency of:
Speed of light, radio waves and microwaves in vacuum is:
Which of the following has the least wavelength?
For the production of electromagnetic waves, the charges used are:
The process of combining low frequency signal with high frequency carries waves is called: