The photoelectric threshold wavelength of silver is 3250×10⁻10m. The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength 2536×10⁻10m is:
(Given h=4.14×10⁻15eVs and c=3×10⁸ms⁻1)
A) 6×10⁵ms⁻1
B)0.6×10⁶ms⁻1
C)61×10³ms⁻1
D)0.3×10⁶ms⁻1
