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What frequency range is the High Frequency band?
- a)100 kHz
- b)1 GHz
- c)30 to 300 MHz
- d)3 to 30 MHz
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
What frequency range is the High Frequency band?a)100 kHzb)1 GHzc)30 t...
The HF band is based on frequencies 3 to 30 Mhz. AM radio stations are in the HF band but normally are stated in kilohertz.
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Most Upvoted Answer
What frequency range is the High Frequency band?a)100 kHzb)1 GHzc)30 t...
High Frequency (HF) band refers to a range of radio frequencies that are commonly used for communication purposes. It is a part of the electromagnetic spectrum and is characterized by its ability to transmit signals over long distances. The HF band is widely used in various applications such as aviation, maritime, military, and amateur radio.
The correct answer to the question is option 'D', which states that the High Frequency band ranges from 3 to 30 MHz. This means that the frequencies within this range can vary from 3 million cycles per second to 30 million cycles per second.
Below is a detailed explanation of why option 'D' is the correct answer:
1. Understanding the Electromagnetic Spectrum:
- The electromagnetic spectrum is divided into different bands based on the frequency range.
- These bands include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
- Each band has specific characteristics and applications.
2. Definition of High Frequency (HF) Band:
- The High Frequency band is a range of frequencies within the radio wave portion of the electromagnetic spectrum.
- It is also known as the Shortwave band or HF band.
- The HF band is located between the Very High Frequency (VHF) band and the Low Frequency (LF) band.
3. Frequency Range of the High Frequency (HF) Band:
- The HF band covers a frequency range from 3 to 30 MHz.
- This range is commonly used for long-distance communication due to its ability to propagate over large distances by reflecting off the ionosphere.
- The ionosphere is a layer of the Earth's atmosphere that can reflect HF signals back to the ground, allowing for long-range communication.
4. Other Frequency Ranges:
- Option 'A' states that the High Frequency band is 100 kHz, which is incorrect.
- Option 'B' states that the High Frequency band is 1 GHz, which is incorrect.
- Option 'C' states that the High Frequency band is 30 to 300 MHz, which is incorrect.
- These options either fall outside the HF band or represent other frequency ranges within the electromagnetic spectrum.
In conclusion, the High Frequency (HF) band is defined by a frequency range of 3 to 30 MHz. This range is commonly used for long-distance communication and is reflected off the ionosphere, allowing for global coverage.
The correct answer to the question is option 'D', which states that the High Frequency band ranges from 3 to 30 MHz. This means that the frequencies within this range can vary from 3 million cycles per second to 30 million cycles per second.
Below is a detailed explanation of why option 'D' is the correct answer:
1. Understanding the Electromagnetic Spectrum:
- The electromagnetic spectrum is divided into different bands based on the frequency range.
- These bands include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
- Each band has specific characteristics and applications.
2. Definition of High Frequency (HF) Band:
- The High Frequency band is a range of frequencies within the radio wave portion of the electromagnetic spectrum.
- It is also known as the Shortwave band or HF band.
- The HF band is located between the Very High Frequency (VHF) band and the Low Frequency (LF) band.
3. Frequency Range of the High Frequency (HF) Band:
- The HF band covers a frequency range from 3 to 30 MHz.
- This range is commonly used for long-distance communication due to its ability to propagate over large distances by reflecting off the ionosphere.
- The ionosphere is a layer of the Earth's atmosphere that can reflect HF signals back to the ground, allowing for long-range communication.
4. Other Frequency Ranges:
- Option 'A' states that the High Frequency band is 100 kHz, which is incorrect.
- Option 'B' states that the High Frequency band is 1 GHz, which is incorrect.
- Option 'C' states that the High Frequency band is 30 to 300 MHz, which is incorrect.
- These options either fall outside the HF band or represent other frequency ranges within the electromagnetic spectrum.
In conclusion, the High Frequency (HF) band is defined by a frequency range of 3 to 30 MHz. This range is commonly used for long-distance communication and is reflected off the ionosphere, allowing for global coverage.
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What frequency range is the High Frequency band?a)100 kHzb)1 GHzc)30 to 300 MHzd)3 to 30 MHzCorrect answer is option 'D'. Can you explain this answer? for Current Affairs 2025 is part of Current Affairs preparation. The Question and answers have been prepared according to the Current Affairs exam syllabus. Information about What frequency range is the High Frequency band?a)100 kHzb)1 GHzc)30 to 300 MHzd)3 to 30 MHzCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Current Affairs 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What frequency range is the High Frequency band?a)100 kHzb)1 GHzc)30 to 300 MHzd)3 to 30 MHzCorrect answer is option 'D'. Can you explain this answer?.
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