Question

The collector plate in an experiment on photoelectric effect is kept vertically above the emitter plate. A light source is put on and a saturation photocurrent is recorded. An electric field is switched on that has a vertically downward direction.
(a) The photocurrent will increase.
(b) The kinetic energy of the electrons will increase.
(c) The stopping potential will decrease.
(d) The threshold wavelength will increase.

Answer 1

Answer:

b) The kinetic energy of the electrons will increase.

Answer 2

Answer:

kinetic energy of the electron will increase