In an experiment on photoelectric effect,light of wavelength 800nm(less than threshold wavelength) is incident on a cesium plate at the rate of 5.0 W. The potential of the coollector plate is made sufficiently positive to the emitter so that the current reaches its saturation value.Assuming that on the average one of every 106 photon is able to eject an photoelectron.The photocurrent in the circuit if in the form 8x*10 -7 A.Find x.

							
Dear student,
Use photoelectric effect concept,
hc/l=K.E + work function





















































Please feel free to ask your queries here. We are all IITians and here to help you in your IIT JEE preparation.
All the best.
Win exciting gifts by                                                                                                                                                                                                                            answering             the                               questions             on                                            Discussion                                         Forum.         So                            help                                                 discuss                               any                                                  query             on                                              askiitians                        forum         and                                     become         an                             Elite                                                 Expert                          League                                                             askiitian.
Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar  respectively : Click here to download the toolbar..
 
Askiitians Expert
Sagar Singh
B.Tech, IIT Delhi