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There are two radioactive nuclei A and B...

There are two radioactive nuclei A and B A is an alpha emitter and B a beta emitter. Their disintegration constants are in the ratio of atoms of A and B at any time t so that probilities of getting alpha and beta particles are same at that instant?

A

`2:1`

B

`1:2`

C

`e`

D

`re^_(1)`

Text Solution

Verified by Experts

The correct Answer is:
a
`lambda_(A) lambda_(B) =(1)/(2)`
Probabilites of getting `alpha`- and `beta`- particles are same. Thus, rates of disintegration are equal.
`:. lambda_(A) N_(A) =lambda_(B) N_(B)`
or `(N_(A))/(N_(B)) = (lambda_(B))/(lambda_(A))=2` .
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