Which of the following is the correct relation between de Broglie wavelength (λ) and the potential difference (V)?
1
\({\rm{\lambda }} \propto \frac{1}{{\sqrt {\rm{V}} }}\)
2
\({\rm{\lambda }} \propto \frac{1}{{\rm{V}}}\)
3
\({\rm{\lambda }} \propto {\rm{V}}\)
4
\({\rm{\lambda }} \propto \sqrt {\rm{V}} \)