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Question

If the relation between time of decay (t) and half life period (t1/2) is (t=4t1/2); the relation between t and mean life (T) is:

A
ln2T2
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B
2T4ln2
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C
4Tln2
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D
2Tln2
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Solution

The correct option is C 4Tln2
Relation between t1/2 and mean life(T).
t1/2=(ln2)T(1)
Given, t=4t1/2(2)
Putting value of t1/2 in (2) from (1).
t=4ln2T

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