A small piece of Cs (work function = 1.9 eV) is placed 22 cm away from a large metal plate. The surface charge density on the metal plate is 1.21 x 10⁻⁹ C m⁻². Now, light of 460 nm wavelength is incident on the piece of Cs. Find the maximum and minimum energies of photo electrons on reaching the plate. Assume that no change occurs in electric field produced by the plate due to the piece of Cs.
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A small piece of Cs metal has kept at a certain distance of 20 cm from a large metal plate having a charge density.
This denotes with energy required by the surface and monochromatic light of wavelength 400mm.
The cesium piece and particle moves along X axis and acceleration is at X=12.
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