In a photoelectric effect experiment, a monochromatic light source emitting photons with energy greater than the work function of the metal under test is used. If the power of the light source is doubled, which one of the following statements is correct?
1
The number of emitted photoelectrons remains the same.
2
The stopping potential remains the same.
3
The number of emitted photoelectrons decreases.
4
The stopping potential doubles.