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

Explanation

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

### Step-by-Step Solution:

1. **Identify the frequency ranges for each mode of communication:**
- **Ground Wave Propagation:** This mode is effective for frequencies ranging from 530 kHz to 1710 kHz.
- **Sky Wave Propagation:** This mode operates effectively in the frequency range of 3 MHz to 30 MHz (commonly considered from 17 kHz to 40 MHz).
- **Space Wave Propagation:** This mode is suitable for frequencies from 54 MHz to 42 GHz.

2. **Analyze the frequency of wave A (1600 kHz):**
- The frequency of wave A is 1600 kHz.
- Since 1600 kHz falls within the ground wave range (530 kHz to 1710 kHz), wave A will be transmitted via ground wave.

3. **Analyze the frequency of wave B (5 MHz):**
- The frequency of wave B is 5 MHz.
- Since 5 MHz falls within the sky wave range (3 MHz to 30 MHz), wave B will be transmitted via sky wave.

4. **Analyze the frequency of wave C (60 MHz):**
- The frequency of wave C is 60 MHz.
- Since 60 MHz falls within the space wave range (54 MHz to 42 GHz), wave C will be transmitted via space wave.

5. **Conclusion:**
- Wave A (1600 kHz) is transmitted via ground wave.
- Wave B (5 MHz) is transmitted via sky wave.
- Wave C (60 MHz) is transmitted via space wave.

Thus, the appropriate modes of communication for the waves A, B, and C are:
- Wave A: Ground Wave
- Wave B: Sky Wave
- Wave C: Space Wave

### Final Answer:
- Wave A → Ground Wave
- Wave B → Sky Wave
- Wave C → Space Wave