Aluminium metal has a threshold frequency corresponding to wavelength `4770overset@ A`. Calculate the photoelectric work function for aluminium and express it in eV.

The threshold wavelength for silver is 3800overset@ A .Calculate the photoelectric work function for silver in eV.

Threshold frequency for photoelectric effect on sodium corresponds to wavelength 5000 overset@A Its work function is

By stopping potential of 2 V, photoelectric current in photocell reduces to zero when cathode is exposed to light of wavelength 4000overset@ A . Calculate the work function of cathode surface..

The wavelength corresponding to the threshold frequency for a certain metal is 5000overset@ A. Calculate the Max. K.E. of the photoelectron emitted when ultraviolet light of wavelength 2500overset@A falls on it.

Given the following data for incident wavelength , and the stopping potential obtained from an experiment on photoelectric effect , estimate the value of Planck's constant and the work function of the cathode material. What is the threshold frequency and corresponding wavelength? What is the most likely metal used for emitter? Incident wavelength (in overset (@)(A) ) 2536, 3650 Stopping potential (in V) 1.95 , 0.5

Light of wavelength 5000 Å falls on a sensitive plate with photoelectric work function of 1.9 eV . The kinetic energy of the photoelectron emitted will be

The photoelectric threshould wavelength for a metal surface is 6600 Å. The work function for this is

The work function for aluminium is 4.125 eV. The cut-off wavelength for photoelectric effect for aluminium will be