Animation A | Animation B

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In this animation, a slider controls the frequency or wavelength of light incident on a material. A graph shows the kinetic energy of ejected electrons as a function of the slider control (kinetic energy is given in eV). Restart.

1. Animation A.  The slider controls the frequency of the incident light (given in 10¹⁵ Hz). What is the work function of the material in eV?  What is the velocity of the ejected electrons if the incident light has a frequency of 2.5 × 10¹⁵ Hz?
2. Animation B.  The slider controls the wavelength of the incident light (given in nanometers, nm). What is the work function of the material in eV?