A 400km thick, bright layer around the sun is known as _______.
A
Photosphere
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B
Chromosphere
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C
Terrestrial
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D
None o fthese
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Solution
The correct option is A Photosphere Photosphere is the lowest layer around the sun in which the energy of the sun is emitted as light. Due to this the layer appears bright. It is approximately 400 km in thickness. So, the correct option is 'Photosphere'.