The half-life of a radioactive substance is decay3/4th months. How much time it will take to of substance?

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Accepted Answer

(b) 8 months — Given, Half-life T = 4 month N 1 (3/4)th (1/4)th = (since, has decayed, only remains) N 4 We know that - t/T 1 N=N   02 t/4 N 1 =  N 2 t/4 1 1 =  4 2 2 t/4 1 1 =    2 2 On comparing both sides we get- t =2 t = 8 month th 3 Therefore, it will take 8 months for of the substance to   4 decay.

Answer

(A) 12 months

Answer

(C) 4 months

Answer

(D) 3 months

The half-life of a radioactive substance is decay3/4th months. How much time it will take to of substance?

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