Question

Remnant exit or imaging forming radiation consists of:

1. interacting photons
2. non - interacting photons
3. small - angle scattered photons
4. large - angel scattered photons

Answer 1

The correct option is (1) interacting photons.

Step-by-step explanation:

The correct option is interacting photons, as remnant exit or imaging forming radiation consists of photons that interact with matter. These photons can be absorbed or scattered by electrons and nuclei in the substance.

When ionizing radiation interacts with matter, such as gamma rays or X-rays, it can transfer energy to electrons or nuclei through scattering. Based on the law of conservation of momentum and energy, electrons tend to absorb more energy than nuclei in these interactions because they have much lower mass compared to nuclei.

This interaction between photons and matter is crucial in medical imaging techniques, such as the use of an Anger camera or gamma camera, which detects the concentration of nuclear activity by collimating and analyzing gamma rays emitted by the patient.