Which mnemonic corresponds to Activity?

Which mnemonic corresponds to Activity?

• A. Rex
• B. SRED
• C. CBAM
• D. GRAD

Answer: (C)

Activity is the rate at which a sample undergoes radioactive decay, i.e., how many disintegrations happen per second, with the unit Becquerel (Bq). The mnemonic that corresponds to this concept in the given set is CBAM, because it’s the cue used to recall the decay-rate quantity and its unit in this context. The other mnemonics are associated with other radiological quantities: Rex is linked to exposure, GRAD to absorbed dose (Gray), and SRED to dose equivalent (Sievert). So CBAM fits best for remembering Activity.

Activity is the rate at which a sample undergoes radioactive decay, i.e., how many disintegrations happen per second, with the unit Becquerel (Bq). The mnemonic that corresponds to this concept in the given set is CBAM, because it’s the cue used to recall the decay-rate quantity and its unit in this context. The other mnemonics are associated with other radiological quantities: Rex is linked to exposure, GRAD to absorbed dose (Gray), and SRED to dose equivalent (Sievert). So CBAM fits best for remembering Activity.