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

Question

( A ) $\approx 6 \times 10^5 \; m/s^{-1}$
( B ) $\approx 0.3 \times 10^6 \; m/s^{-1}$
( C ) $\approx 0.6 \times 10^5 \; m/s^{-1}$
( D ) $\approx 61 \times 10^3 \; m/s^{-1}$