Define stopping potential.

Define resting potential , action potential and electrical potential.

A radiation of 5000 overset @ A is incident on metal surface whose work- function is 1.2 eV. find out the value of stopping potential.

State the influence of work function on kinetic energy of electrons emitted in a photocell. If the intensity of the incident radiation is doubled, what changes occur in the stopping potential and photoelectric current?

State the dependence of work function on kinetic energy of electrons emitted in a photocell. If the intensity of the incident radiation is doubled, what changes occur in the stopping potential and photoelectric current?

Sketch a graph between frequency of incident radiations and stopping potential for a given photosensitive material. What information can be obtained from the value of the intercept of potential axis? A source of light of frequency of greater than the threshold freuency is placed at a distance of 1 m from the cathode of a photocell? the distnace of hte light sources from the cathode is reduced explain giving reasons, what change will you observe in the Stopping potential.

The work function of caesium metal is 2.14 eV. When light of frequency 6 xx 10^14 Hz is incident on the metal surface, photomission of electrons occurs. What is the stopping potential.

If the frequency of incident radiations is equal to the thresold frequency, what will be the value of stopping potential?

If the intensity of incident radiations in a photocell is increased, how does the stopping potential vary?