If modulated signal frequency is represented by fm, carrier frequency by fc, fmin and fmax represent minimum and maximum values respectively, then the lower sideband refers to the range:
Correct answer: A. fc - fmax to fc - fmin
- A. fc - fmax to fc - fmin
- B. fc + fmin to fc + fmax
- C. fc - fm
- D. fm - fc
Explanation
Lower sidebands (LSB) range from fc-fmax to fc-fmin.
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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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