If Ψ(x,t) is the wave function associated with a quantum particle moving in x-direction at given time t, Then which one of the following is incorrect regarding \({{\left| \Psi \left( x,t \right) \right|}^{2}}\)
1
\({{\left| \Psi \left( x,t \right) \right|}^{2}}={{\Psi }^{*}}\left( x,t \right)\Psi \left( x,t \right)\)
2
\({{\left| \Psi \left( x,t \right) \right|}^{2}}\) represents probability density of the quantum particle
3
\({{\left| \Psi \left( x,t \right) \right|}^{2}}\) is a dimension less quantity
4
\({{\left| \Psi \left( x,t \right) \right|}^{2}}\) should be negative