Astronomy 1.Electromagnetic radiation emitted from the Sun\'s surface reaches Ea

Question

Astronomy

1.Electromagnetic radiation emitted from the Sun's surface reaches Earth in about 8 minutes. However, this same radiation was emitted by fusion reactions in the core
      
A.8 minutes ago.
      
B.11 years ago.
      
C.several hundred years ago.
      
D.several thousand years ago.
      
E.several hundred thousand years ago.

2. Where do fusion reactions occur while a star is on the main sequence ?
      
A.In a shell around the core
      
B.everywhere inside the Sun
      
C.only the core
      
D.core and radiation zone

Explanation / Answer

1.Electromagnetic radiation emitted from the Sun's surface reaches Earth in about 8 minutes. However, this same radiation was emitted by fusion reactions in the core.
Answer:
D. several thousand years ago.
Sun radiation from light can reach in 8 minutes.
But that radiation or energy of that light was release by fusion in the solar core about a million year ago or a several thousand year ago

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