The threshold frequency of the metal of the cathode in a photoelectric cell is `1xx10^(15)Hz`. When a certain beamm of light is incident on the cathode, it is found that a stopping potential 4.144 V is required to reduce the current to zero. The frequency of the incident radiation is

The threshold frequency for a metal is 10^(15) Hz. When light of wavelenght 4000 Å is made incident on it, then

The threshold frequency for a certain metal for photoelectric effect is 1.7x10^(15)Hz . When light of frequency 2.2xx10^(15)Hz is incident on the metal surface, the kinetic energy of the emitted photoelectrons is 3.3xx10^(-19)J . What is the value of the Planck's constant ?

The threshold frequency for a certain metal is 3.3 xx 10^(14) Hz. If light of frequency 8.2 xx 10^(14) Hz is incident on the metal, predict the cut - off voltage for the photoelectric emission.

The threshold frequency for a certain metal for photoelectric effect is 1.7 xx 10^15 Hz .When light of frequency 2.2 xx 10^15 Hz is incident on the metal surface, the kinetic energy of the emitted. photoelectrons is 3.3 xx 10^-19 J .Calculate Planck's constant.

When a certain metal surface is illuminated wth light of frequency v, the stopping potential for photoelectric current is V_(0) . When the same surface is illumiinated by light of frequency (v)/(2) , the stopping potential is (V_(0))/(4) . The threshold frequency ofr photoelectric emissiohn id

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

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

When a 6000Å light falls on the cathode of a photo cell and produced photoemission. If a stopping potential of 0.8 V is required to stop emission of electron, then determine the threshold frequency