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

The photoelectric current in a photoelectric cell can be reduced to zero by a stopping potential of 1.8 volt. Monochromatic light of wavelength 2200 overset(@)(A) is incident on the cathode. Find the maximum kinetic energy of the photoelectrons in joules. [Charge on electron = 1.6 xx 10^-19 C ]

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

When monochromatic light of wavelength lambda is incident on a metallic surface the stopping potential for photoelectric current is 3V_(0) when same surface is illuminated with light of waelength 2lambda the stopping potential is V_(0) The threshold wavelength for this surface when photoelectric effect takes place is

Electrons are emittes with zero velocity from a metal surface when it is exposed to radiation of wavelength 6800A^@ . Calculate threshold frequency (nu_0) and a work function (W_0) of the metal.

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

Consider a metal exposed to light of wavelength 600 nm. The maximum energy of the electron doubles when light of wavelength 400 nm is used. Find the work function in eV.