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A radio station broadcasts at 30 meters band. The frequency of electromagnetic waves transmitted from this station could be…
10 MHz
10 kHz
3 x 1010Hz
19 x 1011Hz
- Radio waves are a form of electromagnetic radiation with frequencies in the range from about 3 kHz to 300 GHz.
- The 30-meter band refers to the wavelength of the radio waves. According to the formula \( \text{Frequency (Hz)} = \frac{300,000,000 \text{ m/s}}{\text{Wavelength (m)}} \).
- For a 30-meter band, the frequency is \( \frac{300,000,000}{30} = 10,000,000 \) Hz or 10 MHz.
- Option 1: 10 MHz
- Correct frequency for a 30-meter band.
- CORRECT ANSWER
- Option 2: 10 kHz
- Too low for a 30-meter band.
- Option 3: \(3 \times 10^{10}\) Hz
- Too high for a 30-meter band.
- Option 4: \(19 \times 10^{11}\) Hz
- Also too high.
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