- Fb Problem 1 In A Photoelectric Effect Experiment Radiation Is Incident Upon A Rubidium Rb Surface Another Metal S 1 (434.68 KiB) Viewed 47 times
fb Problem 1 - In a photoelectric effect experiment, radiation is incident upon a rubidium (Rb) surface. Another metal surface is a parallel to this Rb surface such that the Rb and this metal surface form parallel plates. No electrons are ejected from the surface until the wavelength of the incident light falls below 571 nm. hf= ha
b) If the incident radiation has a wavelength of 350 nm, potential difference between the Rb surface and the other metal plate needed to bring the fastest photoelectrons to a halt. (= 350nm ha Wo=2.18eV ho he = /2 mu² two /= ₂ mun he ㅈ V- el - Wo lo e v Wo 16.626E -34 J.-)(3E8m/s) V= (1.6E-196) (350E-9 m) 2.18 eV V- 1.374 V
a d) Consider a beam of photoelectrons made of electrons from part (b). These electrons are incident upon double-slit apparatus with a slit separation of 1.50x10-8 m. The most likely place that the electrons would land on a viewing screen is directly across from the center of the double-slit apparatus. Find the angle from the normal to the apparatus that locates the next most likely place the electrons would land on the viewing screen. 4.000