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Which of the following are true regarding ionosphere?
1. It is the uppermost layer of atmosphere
1. It is the uppermost layer of atmosphere
2. The molecules and atoms of nitrogen and oxygen in this layer absorb a part of solar radiation and become ionized
3. This layer is responsible for reflecting back the radio waves transmitted from the earth.
- a)1 and 2 Only
- b)1 and 3 Only
- c)2 and 3 Only
- d)1, 2 and 3
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Which of the following are true regarding ionosphere?1. It is the uppe...
The correct answer is option 'C' - 2 and 3 only.
Explanation:
1. It is not true that the ionosphere is the uppermost layer of the atmosphere. The ionosphere is actually a region within the Earth's atmosphere, located between approximately 60 kilometers (37 miles) and 1,000 kilometers (620 miles) above the Earth's surface.
2. The ionosphere is composed of charged particles called ions. The molecules and atoms of nitrogen and oxygen in this layer absorb a part of the solar radiation and become ionized. This means that the energy from the sun causes the particles in the ionosphere to lose or gain electrons, resulting in the formation of ions.
3. The ionosphere is responsible for reflecting back radio waves transmitted from the Earth. This property of the ionosphere is utilized in long-distance radio communication, as the radio waves can bounce off the ionized particles in the ionosphere and travel long distances.
The ionosphere is divided into several layers, including the D layer, E layer, F1 layer, and F2 layer. Each of these layers has different characteristics in terms of ionization levels and their impact on radio wave propagation.
In summary, the ionosphere is a region within the Earth's atmosphere that contains ionized particles. It absorbs solar radiation, becomes ionized, and is responsible for reflecting back radio waves transmitted from the Earth.
Explanation:
1. It is not true that the ionosphere is the uppermost layer of the atmosphere. The ionosphere is actually a region within the Earth's atmosphere, located between approximately 60 kilometers (37 miles) and 1,000 kilometers (620 miles) above the Earth's surface.
2. The ionosphere is composed of charged particles called ions. The molecules and atoms of nitrogen and oxygen in this layer absorb a part of the solar radiation and become ionized. This means that the energy from the sun causes the particles in the ionosphere to lose or gain electrons, resulting in the formation of ions.
3. The ionosphere is responsible for reflecting back radio waves transmitted from the Earth. This property of the ionosphere is utilized in long-distance radio communication, as the radio waves can bounce off the ionized particles in the ionosphere and travel long distances.
The ionosphere is divided into several layers, including the D layer, E layer, F1 layer, and F2 layer. Each of these layers has different characteristics in terms of ionization levels and their impact on radio wave propagation.
In summary, the ionosphere is a region within the Earth's atmosphere that contains ionized particles. It absorbs solar radiation, becomes ionized, and is responsible for reflecting back radio waves transmitted from the Earth.
Community Answer
Which of the following are true regarding ionosphere?1. It is the uppe...
I will give you full explanation.
Ionosphere extends from 80 km to about 480 km. In this layer, the ionization of molecules and atoms occurs mainly as a result of ultraviolet rays, X-rays and gamma rays. Ionization refers to the process by which atoms are charged into ions through removal or addition of electrons giving them an electrical charge.
In this layer, the temperature decreases with increase in elevation until a low point of - 100 degree celsius is reached. Beyond this level, the temperature increases again as a result of absorption of short wave solar radiation by the atoms of oxygen. Nitrogen in the extremely rarefied air of ionosphere.
Ionosphere reflects low frequency radio waves, but absorbs medium and high frequency waves. Thus, this layer is especially important in long distance radio communication.
Ionosphere extends from 80 km to about 480 km. In this layer, the ionization of molecules and atoms occurs mainly as a result of ultraviolet rays, X-rays and gamma rays. Ionization refers to the process by which atoms are charged into ions through removal or addition of electrons giving them an electrical charge.
In this layer, the temperature decreases with increase in elevation until a low point of - 100 degree celsius is reached. Beyond this level, the temperature increases again as a result of absorption of short wave solar radiation by the atoms of oxygen. Nitrogen in the extremely rarefied air of ionosphere.
Ionosphere reflects low frequency radio waves, but absorbs medium and high frequency waves. Thus, this layer is especially important in long distance radio communication.
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Which of the following are true regarding ionosphere?1. It is the uppermost layer of atmosphere2. The molecules and atoms of nitrogen and oxygen in this layer absorb a part of solar radiation and become ionized3. This layer is responsible for reflecting back the radio waves transmitted from the earth.a)1 and 2 Onlyb)1 and 3 Onlyc)2 and 3 Onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?
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