Electrons having de-Broglie wave length $\lambda$ are incident on target in X-ray tube. Minimum wavelength of X-rays generated is  ${\lambda }_1$. Then choose INCORRECT statement(s).

If  $\lambda$ is increased the value of ${\lambda }_1$ decreases.

If $\lambda$ is increased the value of ${\lambda }_1$ increases.

The value of ${\lambda }_1$ will not change if target metal is changed.

The value of ${\lambda }_1$ does not depend on  $\lambda$.