Multiple choice

Above the ozone layer, a layer of ions is present, which reflects

  1. radio waves

  2. infrared rays

  3. x-rays

  4. None of these
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A Correct answer
Explanation

Above the ozone layer, a layer of ions is present, which does not reflect ultraviolet rays, X-rays or infrared rays. While both oxygen and ozone together absorb 95 to 99.9% of the Sun's ultraviolet radiation, only ozone effectively absorbs the most energetic ultraviolet light, known as UV-C and UV-B.  

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