For a common emiter configuration if `a` and `beta` have their usualy meaning , the incorrrect relationship between `a and beta` is :

Options

A. `(1)/(alpha)=(1)/(beta)+1`
B. `alpha=(1-beta)/(alpha)`
C. `alpha=(beta)/(1+beta)`
D. `alpha=(beta^(2))/(1+beta^(2))`

Explanation

(b, d) : In common emitter mode
`rArr (1)/(alpha) =(1)/(beta) +1`
`beta) ((alpha)/( 1-alpha)) ` or `alpha = (beta)/( 1+beta)`