Two photons of equal energy 8 MeV each, strikes two different metal sheets having work functions 4 MeV and 6 MeV, respectively. The ratio of maximum velocity of electrons emitted from two metal sheets respectively is:

1 : 2 2 : 1 $\sqrt{2}:1$ $1:\sqrt{2}$

$\sqrt{2}:1$

The correct answer is Option (3) → $\sqrt{2}:1$