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With reference to the Solar flare, consider the following statements:
  1. It is magnetic plasma ejected at great speed from the solar surface.
  2. These are very helpful for astronauts and radio communications.
Which of the statements given above is/are correct?
  • a)
    1 Only
  • b)
    2 Only
  • c)
    Both 1 and 2
  • d)
    Neither 1 nor 2
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
With reference to the Solar flare, consider the following statements: ...
The correct answer is option 'A', which states that statement 1 only is correct.

Let's analyze both statements individually to understand why statement 1 is correct and statement 2 is incorrect.

Statement 1: It is magnetic plasma ejected at great speed from the solar surface.
Solar flares are intense bursts of radiation that occur on the Sun's surface. They are caused by the sudden release of magnetic energy stored in the solar atmosphere. When the magnetic field lines in the Sun's atmosphere get twisted and tangled, they can become unstable and release a large amount of energy in the form of a solar flare. This energy is in the form of magnetic plasma, which is a hot, ionized gas composed of charged particles.

Statement 1 is correct because solar flares are indeed magnetic plasma ejected at great speed from the solar surface.

Statement 2: These are very helpful for astronauts and radio communications.
This statement is incorrect. Solar flares can have detrimental effects on astronauts and radio communications. Solar flares release high-energy particles and radiation that can be harmful to astronauts in space. They can disrupt spacecraft electronics and pose a risk to human health. Additionally, solar flares can cause radio blackouts by interfering with radio waves and disrupting communication systems on Earth.

Therefore, statement 2 is incorrect because solar flares are not helpful for astronauts and radio communications.

In conclusion, statement 1 is correct as solar flares are magnetic plasma ejected at great speed from the solar surface. Statement 2 is incorrect as solar flares can have negative effects on astronauts and radio communications.
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Community Answer
With reference to the Solar flare, consider the following statements: ...
Recently, the Sun emitted X-class solar flares which disrupted radio communications over parts of the United States and the Pacific Ocean.
  • What is it? These are magnetic plasma ejected at great speed from the solar surface.
  • They occur during the release of magnetic energy associated with sunspots (‘dark’ regions on the Sun that are cooler than the surrounding photosphere), and can last for a few minutes or hours.
  • These flares can be divided into various categories based on their brightness in X-ray wavelengths
  • There are five different classes of solar flaresA, B, C, M, and X.
  • Each class is at least ten times more potent than the one before it.
  • X-class flares are large and M-class are medium-sized flares typically result in brief radio blackouts that affect the Earth’s Polar Regions.
  • C-class flares are slight and have little effect on the Earth.
Impact of Solar Flares on Earth
  • The energy particles released by solar flares into space impact the ionosphere and radio communications at the Earth.
  • They can even affect power grids and navigation signals and endanger astronauts and spacecraft.
Hence only statement 1 is correct.
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