The Half-Value Layer (HVL) for Annihilation Radiation in Lead Is

question 2

Multiple Choice

The half-value layer (HVL) for annihilation radiation in lead is 4.1 cm.Approximately what percentage of a of 511 keV photon beam will penetrate 15 cm of lead?

• A)50%
• B)37%
• C)33%
• D)25%

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Definitions:

FIFO Perpetual

An accounting method where goods are sold based on the order they were purchased or produced; "FIFO" stands for "first in, first out," and "perpetual" means the inventory records are updated continuously.