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      Question

      The energy emitted by the Sun is due to

      A Chemical reaction Correct Answer Incorrect Answer
      B Nuclear fission Correct Answer Incorrect Answer
      C Nuclear fusion Correct Answer Incorrect Answer
      D All of the above Correct Answer Incorrect Answer

      Solution

      The spectrum of the Sun's solar radiation is close to that of a black body with a temperature of about 5,800 K. The Sun emits Electromagnetic radiation across most of the electromagnetic spectrum. Although the Sun produces Gamma rays as a result of the nuclear fusion process, these super high energy photons are converted to lower energy photons before they reach the Sun's surface and are emitted out into space.

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