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Q: The Outermost region of the Sun is known as :
  • A. Corona
  • B. Chromosphere
  • C. Convection zone
  • D. Radiation field
Correct Answer: Option A - Corona is the outermost layer of the Sun. It experiences a very high temperature, about one million degree celsius. It starts at about 2100 km above the photosphere. Corona isn't visible from the earth (except during solar eclipse). Layers of the Sun are Photosphere, Chromosphere, Transition region, Corona.
A. Corona is the outermost layer of the Sun. It experiences a very high temperature, about one million degree celsius. It starts at about 2100 km above the photosphere. Corona isn't visible from the earth (except during solar eclipse). Layers of the Sun are Photosphere, Chromosphere, Transition region, Corona.

Explanations:

Corona is the outermost layer of the Sun. It experiences a very high temperature, about one million degree celsius. It starts at about 2100 km above the photosphere. Corona isn't visible from the earth (except during solar eclipse). Layers of the Sun are Photosphere, Chromosphere, Transition region, Corona.