The invisible part of the spectrum of white light consists of

The invisible part of the spectrum of white light consists of
  • A.
    Infra-red and ultra-violet only
  • B.
    Infra-red, ultra-violet and blue only
  • C.
    red, orange and green only
  • D.
    red and violet only
  • E.
    yellow and indigo only
Correct Answer: Option A
Explanation
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