Q. A device used for the measurement of radioactivity is
A) cyclotron
B) mass spectrometer
C) G.M.counter
D) nuclear reactor
✔ Correct Answer: G.M.counter
Exam Insight
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A) cyclotron
B) mass spectrometer
C) G.M.counter
D) nuclear reactor
✔ Correct Answer: G.M.counter
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