Both amplitude modulation (AM) and frequency modulation (FM) are used for radio broadcasting. The amplitude of the high frequency carrier wave is varied or modulated in accordance with the variations in the amplitude of the audio signals that are to be transmitted, in te process of amplitude modulation in frequency modulation te amplitude of the carrier remains constant but its frequency is varied inn accordance withh the audio signal. Reception with AM signals is in general is affected by interference of various kinds ad elaborated equipment is required for FM broadcast.
In india the radio signals are boarcast using-

Options

A. AM signals only
B. AM signals and FM. Signals all over the country
C. AM signals at few of the stations and FM Signals at a few selected stations
D. FM signals only

Answer

To solve the question regarding the type of radio signals broadcasted in India, we will follow these steps:

### Step-by-Step Solution:

1. **Understanding Amplitude Modulation (AM)**:
- In amplitude modulation, the amplitude of the carrier wave is varied in accordance with the amplitude of the audio signal being transmitted. This means that the strength of the signal changes based on the information being sent.

2. **Understanding Frequency Modulation (FM)**:
- In frequency modulation, the amplitude of the carrier wave remains constant, but its frequency is varied according to the audio signal. This means that the information is encoded in the frequency changes rather than in the amplitude.

3. **Comparing AM and FM**:
- AM is more susceptible to interference and noise, which can affect the quality of the reception.
- FM generally provides better sound quality and is less affected by interference, but it requires more complex equipment for broadcasting.

4. **Analyzing the Question**:
- The question asks specifically about the type of radio signals broadcasted in India. It provides multiple-choice options regarding whether AM, FM, or both are used.

5. **Evaluating the Options**:
- Option 1: AM signals only - This is incorrect as both types are used in India.
- Option 2: AM signals and FM signals all over the country - This is also incorrect as not all areas use both.
- Option 3: AM signals at a few stations and FM signals at a few selected stations - This is correct, as different regions may use different types of modulation based on geographical and infrastructural considerations.
- Option 4: FM signals only - This is incorrect since AM is also used.

6. **Conclusion**:
- The correct answer is Option 3: AM signals at a few stations and FM signals at a few selected stations.

### Final Answer:
In India, the radio signals are broadcast using AM signals at a few stations and FM signals at a few selected stations.

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