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GK QUESTION#3074

Assertion (A): Johann Wilhelm Ritter discovered ultraviolet rays in 1801. Reason (R): Ultraviolet rays are part of the infrared region of the spectrum.

  1. ABoth A and R are true, and R is the correct explanation of A.
  2. BBoth A and R are true, but R is not the correct explanation of A.
  3. CA is true, but R is false.Correct answer
  4. DA is false, but R is true.
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Answer

C. A is true, but R is false.

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Explanation

Johann Wilhelm Ritter identified ultraviolet radiation in 1801 by investigating effects beyond violet. Ultraviolet and infrared are different spectral regions on opposite sides of visible light. The assertion is true and the reason is false.

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