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?

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?

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

If the intensity of incident radiataions on a metal is doubled, what happens to the K.E. of electrons emitted.

In photoelectric effect, does the photoelectric current depend on the intensity of incident radiation? Give reasons.

if the maximum k.E. of electrons emitted by a photocell is 4 eV, what is the stopping potential?

Define the term work function of a metal. The threshold frequency of a metal is f_0 when the light of frequency 2f_0 is incident on the metal plate, the maximum velocity of electrons emitted is v_1 , when the frequency of the incident radiation is increased to 5f_0 , the maximum velocity of electrons emitted is v_2 . Find the ratio of v_1 and v_2 .

The question given below consist of an assertion (A) and a reason ( R). Use the following key to choose the appropriate answer to these questions from the codes (a), (b), ( c) and (d) given below: (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is NOT the correct explanation of A. (c) A is true but R is false. (d) A is false and R is also false. Assertion: Kinetic energy of photo electrons emitted by a photosensitive surface depends upon the intensity of incident photon. Reason: The ejection of electrons from metallic surface is possible with frequency of incident photon below the threshold frequency.