1. Tardigrade
  2. Question
  3. Physics
  4. To observe the effect of intensity of light on photocurrent, I. collector is maintained at positive potential with respect to emitter. II. frequency of incident light is kept fixed. III. accelerating potential is fixed. IV distance of surface from emitter is kept constant. Which of the above statements are correct?

Q. To observe the effect of intensity of light on photocurrent,
I. collector is maintained at positive potential with respect to emitter.
II. frequency of incident light is kept fixed.
III. accelerating potential is fixed.
IV distance of surface from emitter is kept constant.
Which of the above statements are correct?

 477  168 Dual Nature of Radiation and Matter Report Error

Solution:

To study effect of intensity, the collector is maintained at a positive potential with respect to emitter so that electrons ejected from are attracted towards collector . Keeping the frequency of the incident radiation and the accelerating potential fixed, the intensity of light is varied and the resulting photoelectric current is measured each time. It is found that the photocurrent increases linearly with intensity of incident light.