The collector plate in an experiment on photoelectric effect is kept vertically above the emitter plate. Light source is made on and a saturation photocurrent is recorded. An electric field is switched on which has a vertically downward direction.

Q. 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.

Q. The anode plate in an experiment on photoelectric effect is kept vertically above the cathode plate. Light source is put on and a saturation photocurrent is recorded. An electric field is switched on which has vertically downward direction.

Q. What happen in an electric circuit if the resistance is increased assume voltage remain same ?

Q. In an experiment on photoelectric effect, light of wavelength 400 nm is incident on a cesium plate at the rate of 5.0 W. The potential of the collector plate is made sufficiently positive with respect to the emitter, so that the current reaches its saturation value. Assuming that on average, one out of every 10⁶ photons is able to eject a photoelectron, find the photocurrent in the circuit.

Q. In an experiment on photoelectric effect, light of wavelength $400\text{nm}$ is incident on a caesium plate at the rate of $5.0\text{W}$. The potential of the collector plate is made sufficiently positive with respect to the emitter so that the current reaches its saturation value. Assuming that on the average, one out of every ${10}^6$ photons is able to eject a photoelectron, find the photocurrent in the circuit.
[Use $hc=1240\text{eV (nm)}$]