The frequencies of electromagnetic waves employed in space communication lie in the range of -

Options

A. `10^(4)` Hz to `10^(7)Hz`
B. `10^(4)` Hz to `10^(11)` Hz
C. 1 Hz to `10^(4)Hz`
D. 1 Hz to `10^(11)` Hz

Answer

To determine the range of frequencies of electromagnetic waves employed in space communication, we can follow these steps:

### Step 1: Understand the Basics of Space Communication
Space communication involves the transmission of information between a transmitter and a receiver using electromagnetic waves. These waves can vary in frequency and are used to encode messages through modulation.

### Step 2: Identify the Key Components
In space communication, the two main components are:
- **Transmitter**: This device encodes the message onto electromagnetic waves.
- **Receiver**: This device receives the transmitted waves and decodes the message.

### Step 3: Determine the Frequency Range
The frequencies of electromagnetic waves used in space communication typically fall within specific ranges. For space communication, the commonly used frequency bands are:
- **Microwave frequencies**: These generally range from about 1 GHz to 300 GHz.
- **Radio frequencies**: These can range from about 30 MHz to 300 GHz.

### Step 4: Conclusion
Based on the information about the frequency ranges used in space communication, we can conclude that the frequencies of electromagnetic waves employed in space communication lie in the range of approximately **1 GHz to 300 GHz**.

### Final Answer
The frequencies of electromagnetic waves employed in space communication lie in the range of **1 GHz to 300 GHz**.

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