Three fourth of the active material decays in a radioactive sample in 3/4 sec

Three fourth of the active material decays in a radioactive sample in 3/4 sec. The half life of the sample is

Options

(a) 1/2 sec
(b) 1 sec
(c) 3/8 sec
(d) 3/4 sec

Correct Answer:

3/8 sec

Explanation:

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