Physics Question from JEE Main 2025 · 22 January, Shift 2

A light source of wavelength $\lambda$ illuminates a metal surface, and electrons are ejected with a maximum kinetic energy of $2 \, \text{eV}$. If the same surface is illuminated by a light source of wavelength $\frac{\lambda}{2}$, then the maximum kinetic energy of ejected electrons will be (The work function of the metal is $1 \, \text{eV}$).