B
Time for the radiation to halve in intensity only
C
Time for half the nuclei to decay
D
Time for temperature to reduce by half
Correct Answer: Option C — Time for half the nuclei to decay
Explanation:
Half-life is the time required for half of the radioactive nuclei in a sample to decay and it is a constant characteristic value specific to...
Half-life is the time required for half of the radioactive nuclei in a sample to decay and it is a constant characteristic value specific to each radioactive isotope.