Question

State physical significance of $\Psi^{2}$.

Answer 1

"The "wave function" of particle is a variable quantity which indicates the "wave characteristics" of a "particle" by mathematical expression. At a given time and space the particular value of wave function is completely depends upon the probability of particle that is present at that time.

It can be represented by $\Psi$

However, the "square of the wave function" ${\Psi}^{2}$, has some physical significance.

The "probability" of "finding" the "particle" described by a "specific wave function" $\Psi$ at a given "point and time" is "proportional" to$\quad {\Psi}^{2}$."