Advanced Diagnostics Training I (ADT-I) Practice Exam

Which statement distinguishes the Photoelectric Effect from Compton Scattering?

Photoelectric transfers all energy to electron; Compton transfers partial energy Photoelectric occurs with Gamma radiation; Compton occurs with Alpha particles Photoelectric occurs in gases; Compton occurs in solids Photoelectric involves nuclear reactions; Compton involves pair production

Correct Answer:

Photoelectric transfers all energy to electron; Compton transfers partial energy

Explanation:

The distinction hinges on what happens to the photon after the interaction. In the photoelectric effect, the incoming photon is absorbed entirely by an electron. Its energy goes into overcoming the electron’s binding energy and giving the electron its kinetic energy, with no photon left to continue on. In Compton scattering, the photon is not absorbed; it is scattered off a (loosely bound or free) electron, transferring part of its energy to the electron and emerging as a photon with reduced energy. So the statement captures the core difference: all of the photon's energy goes to the electron in the photoelectric effect, while in Compton scattering only part of the energy is transferred to the electron and a scattered photon remains.

Access more questions from this quiz

Continue to Advanced Diagnostics Training I (ADT-I) Practice Exam for more practice questions and the full quiz experience.

Access More Questions