When light of wavelength 248 nm falls on a metal of threshold energy 3.0 eV, the de-Broglie wavelength of emitted electrons is _______$\mathop A\limits^o$. (Round off to the Nearest Integer).

[ Use : $\sqrt 3$ = 1.73, h = 6.63 $\times$ 10^$-$34 Js

m_e = 9.1 $\times$ 10^$-$31 kg; c = 3.0 $\times$ 10⁸ ms^$-$1; 1eV = 1.6 $\times$ 10^$-$19 J]