NEET UG PHYSICS MCQ: NUCLEI

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t = 0

, a radioactive substance has a mass m. Its half-life is 10 minutes. When

t = {t_1}

, the amount of substance disintegrated is m/5 and when

t = {t_2}

, the amount of substance disintegrated is 3m/5. Then the time interval

({t_2} - \mathrm{ }{t_1})

View answer and explanation

Correct option: A

10 minutes

Option A (10 minutes) is correct because the time interval between the disintegration of m/5 and 3m/5 is equal to one half-life.

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