Multiple Choice
A beam of 1-MeV gamma rays incident on a piece of 0.50-cm thick lead is reduced by 50% of its initial value. How thick must the lead be to reduce the beam to one percent of its initial value?
A) 1.1 cm
B) 2.2 cm
C) 3.3 cm
D) 4.4 cm
E) 8.4 cm
Correct Answer:
Verified
Correct Answer:
Verified
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