Light from a hydrogen tube is incident on the cathode of a photoelectric cell the work function of the cathode surface is `4.2 eV`. In order to reduce the photo - current to zero the voltage of the anode relative to the cathode must be made

Radiation from a hydrogen discharge discharge tube is incident on the cathode ofa photocell having energy 3.4 eV .The work function of the cathode suface is 3.2 eV. To reduce the photocurrent to zero, the voltage (in volts) of th anode realtive to the cathode must be made

Light coming from a discharge tube filled with hydrogen falls on the cathode fo t he photoelectric cell. The work function of the surface of cathode is 4eV . Which one of the following values of the anode voltage (in volts) with respect to the cathode will likely to make the photo current zero?

Light coming from a discharge tube filled with hydrogen falls on the cathode for the photoelectric cell. The work function of the surface of cathode is 4eV . Which one of the following values of the anode voltage (in volts) with respect to the cathode will likely to make the photo current zero?

Light coming from a discharge tube filled with hydrogen falls on the cathode of the photoelectric cell. The work function of the surface of cathode is 4eV Which one of the following values of the anode voltage (in volts ) with respect to the cathode willl likely to make the photoo current zero.

Light coming from a discharge tube filled with hydrogen falls on the cathode of the photoelectric cell. The work function of the surface of cathode is 4eV Which one of the following values of the anode voltage (in volts ) with respect to the cathode willl likely to make the photoo current zero.

The work function for a metal is 4 eV. To eject the photo electrons with zero velocity the wavelength of the incident light should be

The work function for a metal is 4 eV. To eject the photo electrons with zero velocity the wavelength of the incident light should be