Question detail
How does increasing distance from a radioactive source reduce exposure?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Atoms and nuclear radiation
Question
- A. It increases the radiation emitted
- B. It decreases the intensity of radiation
- C. It has no effect on radiation levels
- D. It increases the risk of contamination
Answer
The correct answer is B: It decreases the intensity of radiation.
Explanation
The correct answer is B: It decreases the intensity of radiation. This supports the learning objective "Explain why tongs, lead-lined containers and protective screens reduce radiation exposure." in Radioactive contamination because it uses the correct atomic and nuclear radiation relationship for Atoms and nuclear radiation. The other options are less suitable because they do not match the required Radioactive contamination idea: It increases the radiation emitted; It has no effect on radiation levels; It increases the risk of contamination.
Common mistake
Misunderstanding Radiation Shielding
Students often think that using tongs or lead-lined containers completely eliminates radiation exposure.
Emphasize that while these tools reduce exposure, they do not eliminate it entirely; proper distance and time management are also crucial.
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