In the photoelectric effect, you got familiar with threshold frequency, stopping potential, and how they are...
The work function for cesium is 1.9eV. A) Find the threshold frequency for the photoelectric effect. B) Find the stopping potential if the wavelength of the incident light is 400nm.
Which of the following statements is correct for photoelectric effect? (A) In order to eject electrons from a metal surface, the wavelength of photon must be shorter than the threshold wavelength. (B) In order to eject electrons from a metal surface, the frequency of photon must be lower than the cut-off frequency. (C) The work function increases with increasing the frequency of photons. (D) The work function increases with increasing the wavelength of photons. (E) The kinetic energy of ejected...
The threshold wavelength for the photoelectric effect for silver is 262 nm. What is the work function 0for silver? What is the maximum kinetic energy K Emax of an emitted electron if the incident light has a wavelength of 212 nm? KEmax =
3. What is photoelectric effect? Explain details threshold frequency, and stopping potentials? Sketch the diagram and necessary formula? Problem-3: What is the threshold wavelength of electron generated by 200 V?
in a photoelectric experiment it is found that a stopping potential of 1.00 v is needed to stop all the electrons when incident light of wavelength 294 nm is used and 2.7 V is needed for light of wavelength 207 nm. from these data determine plank's constant and the work function of thr metal.
Light of intensity 2 μW.cm-2 is incident on an iron sample of area 4 cm 2 . Assume that the iron reflects 96% of the incident light and only 3% of the absorbed radiation lie in the violet region, which is above the critical/threshold frequency. (a) What intensity is available for the photoelectric effect ? (b) Assuming that all the photons in the violet region have an effective wavelength of 250nm, what is the number of electrons emitted per second?...
In a photoelectric effect experiment at a frequency above cut off, the number of electrons ejected is proportional to: A) their kinetic energy B) their potential energy C) the work function D) the frequency of the incident light E) the number of photons that hit the sample Which of the followings can increase the kinetic energy of each emitted electrons? I. Increase the light frequency but keep the intensity fixed ll. Increase the light intensity but keep frequency fixed Ill....
Please show steps and show equations used
5. The cut-off (threshold) wavelength for the photoelectric effect for silver is 325 nm. (a) (4 pts) Find the maximum speed of electrons ejected from a silver surface by ultraviolet light of wavelength 250 nm. (b) (2 pts) What would happen if the intensity of light at wavelength 250 nm were increased? (o) 2 pts) If the silver surface were illuminated by a light of wavelength 500 nm, what would happen? Explain (d)...
According to Einstein's photoelectric effect, as long as the threshold frequency was met, brighter intensity light would increase the current of the cell. What was his reasoning for this? Brighter light contains more photons, all of which have enough energy to eject an electron from a given atom. Brighter light contains photons of higher mass that can hit electrons with more force, knocking them away from their atoms. Brighter light contains waves of larger amplitude which can hit more than...
Q1. The diagram shows the graphs of the stopping potential as a function of the frequency of the incident light for photoelectric experiments performed on three different materials. Rank the materials according to the values of their work functions, from least to greatest 3 stop A. 123 B. 321 C. 213 D. 312 E. 132 Q2. The work function of a metal is 1.8 eV. The stopping potential for electrons ejected from a sample by light of frequency 5x10"Hz is?...