For television transmission, the frequency employed is normally in the range :

Options

A. `30-300MHz`
B. `30-300GHz`
C. `300-300KHz`
D. `30-300Hz.`

Answer

To solve the question regarding the frequency range employed for television transmission, we will analyze the options provided and identify the correct range.

### Step-by-Step Solution:

1. **Understanding Television Transmission**:
Television signals are transmitted over the air using electromagnetic waves. The frequency of these waves is crucial for effective transmission and reception.

2. **Analyzing the Options**:
- **Option 1**: 30 to 300 megahertz (MHz)
- **Option 2**: 30 to 300 gigahertz (GHz)
- **Option 3**: 300 to 3300 kilohertz (kHz)
- **Option 4**: 30 to 300 hertz (Hz)

3. **Identifying the Correct Frequency Range**:
- **Option 1 (30 to 300 MHz)**: This range is commonly used for television broadcasting. It falls within the VHF (Very High Frequency) and UHF (Ultra High Frequency) bands, which are suitable for TV signals.
- **Option 2 (30 to 300 GHz)**: This frequency range is too high for television transmission; it is more suitable for microwave communications.
- **Option 3 (300 to 3300 kHz)**: This range is too low for television signals; it is typically used for AM radio broadcasting.
- **Option 4 (30 to 300 Hz)**: This frequency range is extremely low and not applicable for television transmission.

4. **Conclusion**:
Based on the analysis, the correct frequency range for television transmission is **30 to 300 megahertz (MHz)**. Therefore, the answer is **Option 1**.

### Final Answer:
The frequency employed for television transmission is normally in the range of **30 to 300 megahertz (MHz)**.

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