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  3. Physics
  4. Which of the following is a correct statement ?

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Q. Which of the following is a correct statement ?

IIT JEEIIT JEE 1998

Solution:

Both the beta rays and the cathode rays are made up of electrons. So, only option (a) is correct.
(b) Gamma rays are electromagnetic waves. (c) Alpha particles are doubly ionized helium atoms and (d) Protons and neutrons have approximately the same mass. Therefore, (b), (c) and (d) are wrong options.