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Question : Correct expression of the following is

Answer»

<P>`Psi_(W) =Psi_(s)-Psi_(p)`
`Psi_(s) =Psi_(w) + Psi_(p)`
`Psi_(w) =Psi_(s)+Psi_(p)`
`Psi_(p) = Psi_(w)+Psi_(s)`

ANSWER :C


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