Question

1. Why do the results for the amount of radiation blocked by the plastic, aluminum, and lead absorbers differ from each other? explain

2. In the last part of the experiment, you used a lead absorber of approximately 12mm (½ an inch) to stop radiation from the radioactive source from reaching the counter. Knowing this, calculate the thickness of lead that would be needed to effectively stop 99% of the y rays from the radioactive source used in this experiment. 12mm stopped 98%

Answer 1