Three waves A,B and C of frequencies 1600 kHz, 5 MHz and 60 MHz, respectively are to be transmitted from one place to another.Which of the following is the appropriate mode of communication?

Options

A. A is transmitted via space wave while B and C are transmitted via sky wave
B. A is transmitted via ground wave, B via sky wave and C via space wave.
C. B and C are transmitted via ground wave while A is transmitted via sky wave.
D. B is transmitted via ground wave while A and C are transmitted via space wave.

Answer

To determine the appropriate mode of communication for the three waves A, B, and C with frequencies 1600 kHz, 5 MHz, and 60 MHz, we will analyze each frequency in relation to the propagation modes: ground wave, sky wave, and space wave.

### Step-by-Step Solution:

1. **Identify the Frequencies**:
- Wave A: 1600 kHz
- Wave B: 5 MHz
- Wave C: 60 MHz

2. **Convert Frequencies to a Common Unit**:
- 1600 kHz = 1.6 MHz
- 5 MHz = 5 MHz
- 60 MHz = 60 MHz

3. **Determine the Propagation Ranges**:
- **Ground Wave Communication**: Frequencies below 3 MHz.
- **Sky Wave Communication**: Frequencies from 3 MHz to 40 MHz.
- **Space Wave Communication**: Frequencies above 40 MHz.

4. **Classify Each Wave**:
- **Wave A (1.6 MHz)**: This frequency is below 3 MHz, so it falls under **Ground Wave Communication**.
- **Wave B (5 MHz)**: This frequency is between 3 MHz and 40 MHz, so it falls under **Sky Wave Communication**.
- **Wave C (60 MHz)**: This frequency is above 40 MHz, so it falls under **Space Wave Communication**.

5. **Summarize the Findings**:
- Wave A is transmitted via Ground Wave Communication.
- Wave B is transmitted via Sky Wave Communication.
- Wave C is transmitted via Space Wave Communication.

6. **Conclusion**:
- The correct classification of the waves is:
- Wave A (1600 kHz) → Ground Wave
- Wave B (5 MHz) → Sky Wave
- Wave C (60 MHz) → Space Wave

### Final Answer:
The appropriate mode of communication is:
- Wave A is transmitted via Ground Wave.
- Wave B is transmitted via Sky Wave.
- Wave C is transmitted via Space Wave.