A radioactive substance X decys into ano...

A radioactive substance `X` decys into another radioactive substance `Y`. Initially, only `X` was present . `lambda_(x)` and `lambda_(y)` are the disintegration constant of `X` and Y. `N_(y)` will be maximum when.

`(N_(y))/(N_(x)-N_(y))=lambda_(y)/(lambda_(x)-lambda_(y))`

`(N_(x))/(N_(x)-N_(y))=lambda_(x)/(lambda_(x)-lambda_(y))`

`lambda_(y)N_(y)=lambda_(x)lambda_(x)`

`lambda_(y)N_(x)=lambda_(y)lambda_(x)`

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