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Define the term 'amplitude modulation'. ...

Define the term 'amplitude modulation'. Explain any two factors which justify the need for modulating a low frequency base-band signal.

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### Step-by-Step Solution: **Step 1: Define Amplitude Modulation (AM)** Amplitude Modulation is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. In AM, the amplitude (the strength or intensity) of the carrier wave is varied in proportion to the waveform of the message signal being sent. This means that the information is encoded in the amplitude of the carrier wave, while the frequency and phase remain constant. **Step 2: Explain the Need for Modulating a Low Frequency Baseband Signal** There are several reasons for modulating low frequency baseband signals. Here, we will discuss two important factors: ...
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