Uses Of Nuclear Radiation (GCSE Physics)

Which protective measure most reduces the radiation dose by increasing the distance from a source?

Which of the following is the main health risk from internal contamination by a radioactive particle lodged in tissue?

Which type of detector is commonly used to measure ionising radiation dose by integrating exposure over time for workers?

A student places a sealed beta source at different distances from a detector and records count rate. Which safety rule should they follow to reduce their personal dose?

Carbon-14 has a half-life often used in radiocarbon dating. If a sample originally had 1000 atoms of C-14 and three half-lives have passed, how many C-14 atoms remain?

What does the unit becquerel (Bq) measure?

Which of the following best explains why wearing a lab coat and gloves alone is not sufficient protection when working with unsealed alpha-emitting sources?

Which isotope and property make Americium-241 useful in household smoke detectors?

Why is lead commonly used as shielding around X-ray or gamma sources?

Which of the following is a common medical use of gamma radiation?

A sample has an activity of 400 Bq. After one minute (60 s), approximately how many decays would you expect to occur?