1.

The relation between half-life (T) and decay constant (lambda) is:

Answer»

`lambdaT=1`
`lambdaT=1/2`
`lambdaT=log_(E), 2T`
`lambda=log 2T`

SOLUTION :By RADIOACTIVE decay law.
The time in which the final amount becomes half of its INITIAL value is called half-life (T) of that radioactive element.
Relation between half-life and distintegration (decay) constant is given by
`T=(0.6931)/(lambda)`
`rArr T=(log_(e)2)/(lambda)`
So, `lambdaT=log_(e)2`.


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