Half-life of a radioactive substance which disintegrates by 75 % in 60 minutes, will be [MP PMT 2002]

Half-life of a radioactive substance which disintegrates by 75 % in 60

1.	Half-life of a radioactive substance which disintegrates by 75 % in 60 minutes, will be [MP PMT 2002]
A.	120 min
B.	30 min
C.	45 min
D.	20 min
Answer» C. 45 min

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Half-life of a radioactive substance which disintegrates by 75 % in 60 minutes, will be [MP PMT 2002]

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