Question

When an electron strikes the target in a Coolidge tube, its entire kinetic energy
(a) is converted into a photon
(b) may be converted into a photon
(c) is converted into heat
(d) may be converted into heat.

Answer 1

Answer:

When an electron strikes the target in a Coolidge tube, its entire kinetic energy  is converted into a photon as coollidge tube is a vaccum tube.