Question

X-rays are produced by:

Options

• oscillating circuits in special vacuum tubes

• excitation of outermost electronic shell of an atom

• excitation of inner electron of atom and is sudden annihilation of high energy free electrons.

• nucleus of an atom, by the destruction of high energy particle.

Answer 1

Excitation of inner electron of atom and is sudden annihilation of high energy free electrons.

Explanation:

X-rays are produced when inner electrons of atoms are excited and when high-energy free electrons are suddenly annihilated. Oscillating circuits produce radio waves, while the other options describe outer-shell excitation and nuclear emissions.