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JAMB Physics 1978 Question 49

Question 49

Electromagnetic Spectrum

Of the following which is different from the others?

  1. A.x-rays
  2. B.gamma-rays
  3. C.cathode rays
  4. D.ultra violet rays
  5. E.infrared rays
Show the answer and explanation

Answer: C (cathode rays)

Explanation

Cathode rays are streams of electrons (particles); the others are all electromagnetic waves.