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Cathode rays have

  • A.Mass only
  • B.Charge only
  • C.No mass and no charge
  • D.Mass and charge both

Answer: D

Cathode rays have both mass and charge.

They are electrons. They are deflected by electric and magnetic fields, which shows they carry charge, and they turn a light paddle-wheel placed in their path, which shows they carry momentum and therefore mass.

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