X-Rays Used in Radiography Have Wavelengths Ranging from 3 ×

question 42

Multiple Choice

X-rays used in radiography have wavelengths ranging from 3 × 10¹⁹ to:

• A) 3 × 108 Hz.
• B) 3 × 10-10 Hz.
• C) 3 × 1010 Hz.
• D) 3 × 1018 Hz.

---

Definitions:

Sensation

The process by which sensory receptors and the nervous system receive and represent stimuli from the environment.

Perception

The process of organizing and interpreting sensory information to make it meaningful.

Absolute Threshold

The minimum stimulus intensity required to detect a stimulus or produce a sensory response in at least 50% of trials, indicating the limits of human sensory perception.

Difference Threshold

The smallest amount of change between two stimuli that a person can detect 50% of the time, also known as the just noticeable difference (JND).