The inverse square law states that the intensity of the radiation:
a. increases as the distance from its source increases because the beam of radiation converges.
b. decreases as the distance away from its source increases because the beam of radiation diverges.
c. increases as the distance away from its source increases because the beam of radiation diverges.
d. decreases as the distance away from its source increases because the beam of radiation converges.
b. The x-ray photons, traveling in straight lines, spread out (diverge) as they radiate away from the source (target). It follows that the intensity of the beam is reduced as this occurs.
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