AP EAMCET Medical 24 Apr 2019 Shift 1 Paper

The kinetic energy of photoelectrons emitted when the metal M is irradiated with light of frequency 1.6 × 1016 Hz is twice the kinetic energy of photoelectrons, when the same metal is irradiated with light of frequency 1.0 × 1016 Hz. What is the work function of the metal M in J?