Question

Which of the following is a correct statement

• A. Beta rays are same as cathode rays
• B. Gamma rays are high energy neutrons
• C. Alpha particles are singly ionized helium atoms
• D. Protons and neutrons have exactly the same mass

Answer 1

Answer: (A)

Beta rays are same as cathode rays

Answer 2

Both the β-rays and the cathode rays are made up of electrons. γ-rays are EM waves, α-particles are doubly ionized helium atoms and protons and neutrons have approximately the same mass.