Question

Select the 4 statements below that are NOT correct regarding x-ray characteristics?

1) X-rays produce fluorescence in certain phosphors
2) X-rays have a photographic effect on film emulsion
3) X-rays have an ionizing effect on air
4) X-rays are focused using collimators
5) X-rays have a physiological effect on living tissue
6) The x-ray beam is monoenergetic
7) X-rays have a penetrating effect on all matter
8) X-rays are negatively charged
9) X-rays travel at the speed of sound
10) X-rays travel in straight lines
11) X-rays are not perceptible by the senses

Answer 1

The incorrect statements about x-ray characteristics are that x-rays are focused using collimators, are monoenergetic, are negatively charged, and travel at the speed of sound.

Step-by-step explanation:

The four statements that are NOT correct regarding x-ray characteristics are:

• X-rays are focused using collimators (Statement 4) - Collimators are used to shape or restrict the beam of x-rays, not to focus them.
• The x-ray beam is monoenergetic (Statement 6) - X-ray beams typically consist of a range of energies, not just one.
• X-rays are negatively charged (Statement 8) - X-rays are a form of electromagnetic radiation and do not have a charge.
• X-rays travel at the speed of sound (Statement 9) - X-rays travel at the speed of light, not the speed of sound.

X-rays have several properties and applications: they can cause fluorescence in some materials, have a photographic effect on film, an ionizing effect on air, and can penetrate various materials, although not all matter equally. They also have a physiological effect on living tissue and travel in straight lines. X-rays cannot be perceived by the human senses, making them invisible and undetectable without the use of specialized equipment.