Question

question 17 / 50
x - ray beam quantity refers to the:
average energy of the x - ray beam
penetrating ability of the x - ray beam
velocity of photons in the x - ray beam
number of photons in the x - ray beam

Explanation:

X - ray beam quantity is related to the number of x - ray photons. The average energy refers to quality, penetrating ability is also related to quality, and photon velocity in x - ray beam is a constant (speed of light) and not quantity.

Answer:

Number of photons in the x - ray beam