The work functions of cesium (\(\text{Cs}\)) and lithium (\(\text{Li}\)) metals are \(1.9\text{ }\text{eV}\) and \(2.5\t…

The work functions of cesium (\(\text{Cs}\)) and lithium (\(\text{Li}\)) metals are \(1.9\text{ }\text{eV}\) and \(2.5\text{ }\text{eV}\), respectively. If light of wavelength 550 nm is incident on these two metal surfaces, for which metal(s) will the photoelectric effect occur? (Planck’s constant \(h=6.63\times 1{0}^{−34}\text{ }\text{Js}\), Speed of light \(c=3\times 1{0}^{8}\text{ }\text{m/s}\).)

[JEE Main 2025, 22 Jan (Shift 1)]