Radioactive Contamination (GCSE Physics)

What is the correct action if an unsealed small spill of radioactive solution occurs in a lab?

A Geiger–Müller tube records count rate from a source. Which change will reduce the count rate detected?

Why is keeping a record (dosimeter readings) for workers important in a facility handling radioactive materials?

If a sealed source emits gamma radiation and is surrounded by concrete, what is the primary purpose of the concrete?

A Gamma-emitting source is stored in a metal box. Which precaution reduces exposure when moving the box?

A patient receives a radioactive tracer that emits gamma rays. Which safety measure is most appropriate for staff after injection?

Which statement about alpha particles is correct?

What does the term “half-life” of a radioactive isotope mean?

Which route of internal contamination is most likely if someone inhales radioactive dust?

A Geiger counter registers 360 counts per minute (cpm). The square root uncertainty (counting statistic) roughly equals the square root of counts in one minute. What is the approximate uncertainty in cpm?

Which type of detector is commonly used to measure alpha, beta and gamma radiation count rates in school labs?