A certain metal when irradiated with light (frequency =3.2*10^16Hz) emits photoelectron with twice kinetic energy as did photoelectrons when the same metal is irradiated by light ( frequency =2.0*10^16Hz). Calculate frequency of electron?
(1)1.2*10^14Hz
(2)8.0*10^15Hz
(3)1.2*10^16Hz
(4)4.0*10^12Hz
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