What are the drawbacks or limitations of amplitude modulation ?

Explanation

### Step-by-Step Solution:

1. **Low Efficiency**:
- Amplitude modulation (AM) is characterized by low efficiency in power usage. The majority of the transmitted power is concentrated in the sidebands, while the carrier wave carries a small fraction of the total power. This results in a lower overall efficiency of the modulation process.

2. **Small Transmission Range**:
- Due to the low efficiency of amplitude modulation, the transmission range is also limited. The reduced power output means that AM signals may not travel as far as other modulation types, leading to a smaller effective coverage area.

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