Answer: No, it is impossible
Explanation:
When we talk about electrons being ejected from a metal, we are talking about the photoelectric effect, which consists of the emission of electrons (electric current) that occurs when light falls on a metal surface under certain conditions.
This is what Einstein proposed with the photoelectric effect:
Light behaves like a stream of particles called photons with an energy [tex]E[/tex], which has an inverse relation with the wavelength [tex]\lambda[/tex] (this means the smaller [tex]\lambda[/tex] is the higher the energy):
[tex]E=\frac{hc}{\lambda}[/tex]
Where [tex]h[/tex] is the Planck constant and [tex]c[/tex] is the speed of light in vacuum.
On the other hand, it is known titanium metal requires a photon with a minimum energy [tex]E_{min}=6.94(10)^{-19} J[/tex] to emit electrons. This means, we need at least a wavelength [tex]\lambda=286 nm=286(10)^{-9}m[/tex] to fulfill this condition.
Therefore:
Since the wavelength range of visible light is between 400nm and 750nm, aproximately, and 286 nm is not in this range; it is impossible to to eject electrons from titanium metal using visible light.
