In amplitude modulation, what remains the same:
Correct answer: A. Frequency of the wave
- A. Frequency of the wave
- B. Amplitude of the wave
- C. Wavelength of the wave
- D. Intensity of waves
Explanation
In amplitude modulation, the amplitude of the carrier wave is altered in accordance with the amplitude of the modulating signal. The frequency of the carrier wave is not altered in amplitude modulation. It is the inverse of frequency modulation.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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