X-ray Attenuation Multiple Choice Questions with Answers – PDF Download

MCQ 1: Gradual decrease in x-ray beam intensity as it passes through material is called:

1. attenuation
2. decay
3. radioactivity
4. imaging

MCQ 2: Attenuation coefficient of bone is 600 m^-1 for x-rays of energy 20 keV and intensity of beam of x-rays is 20 Wm^-2, then intensity of beam after passing through a bone of 4mm is:

1. 3 Wm^-2
2. 2.5 Wm^-2
3. 2.0 Wm^-2
4. 1.8 Wm^-2

MCQ 3: Bones look white in x-ray photograph because:

1. they are bad absorbers of x-rays
2. they reflect x-rays
3. they are good absorbers of x-rays
4. they are bad absorbers of ultraviolet rays

MCQ 4: Attenuation coefficient depends on:

1. frequency of x-ray photons
2. wavelength of x-ray photons
3. energy of x-ray photons
4. amplitude of x-ray photons

MCQ 5: As the x-rays pass through matter, it's intensity:

1. increases
2. decreases
3. remains constant
4. may increase or decrease depending on the object