List of top Physics Questions on Modern Physics asked in UPCATET

Photons of energy \(4\,\text{eV}\) are incident on a metal surface whose work function is \(2\,\text{eV}\). If the intensity of this incident light is doubled, the maximum kinetic energy of the emitted photoelectrons will:
Photons and alpha particles have the same de-Broglie wavelength. What is the same for both of them?