The photoelectric threshold wavelength of silver is $3250\times 10^{-10}\text{m}$. The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength $2536\times 10^{-10}\text{m}$ is [Given $h=4.14\times 10^{-15}\text{eVs}$ and $c=3\times 10^8{\text{ms}}^{-1}$ ]:

1. A
   $\approx 0.6\times 10^5{\text{ms}}^{-1}$
2. B
   $\approx 0.6\times 10^6{\text{ms}}^{-1}$
3. C
   $\approx 61\times 10^3{\text{ms}}^{-1}$
4. D
   $\approx 0.3\times 10^6{\text{ms}}^{-1}$