If stopping potentials corresponding to wavelengths `4000A` and `4500A` are 1.3 V and 0.9 V, respectively, then the work function of the metal is

For certain photosensitive material, a stopping potential of 3.0 V is required for light of wavelength 300nm , 2.0V for 400nm and 1.0V for 600nm . The work function of the material is (nearly)

(a) If the wavelength of the light incident on a photoelectric cell be reduced from lambda_(1) to lambda_(2) Å , then what will be the change in the cut-off potential? (b) Light is incident on the cathode of a photocell and the stopping voltages are measured for light of two different wavelengths. From the data given below, determine the work function of the metal of the cathode in eV and the value of the universal constant hc//e . {:("WavelengthÅ","Stopping voltage (volt)"),(4000, 1.3),(4500, 0.9):}

Light is incident on the cathode of a photocell and the stopping voltages are measured from light of two difference wavelengths. From the data given below, determine the work function of the metal of the cathode in eV and the value of the universal constant hc/e. Wavelength (Å) Stopping voltage (volt) 4000 1.3 4500 0.9

The stopping potential of copper is 2.72V for light of wavelength 1849 Å . Determine the work function and threshold frequency of the metal.

Metal surface emits photoelectrons when light of wavelength 400 nm is incident on it. Calculate the work function of the metal if stopping potential is 0.5 V.

In photoelectric effect experiment, the stopping potential for incident light of wavelength 4000 Å, is 3V. If the wavelength is changed to 2500 Å, the stopping potential will be

In a photoelectric effect experiment, the stopping potential is 0.71 V and corresponding wavelength of incident photon was 491 nm. Now the stopping potential of battery is increased to 1.4 V. Find new wavelength of incident photon ?

Photons of energy 5.5 eV are incident on a metal surface. If the stopping potential is 3V, then the work function of the metal will be