The following data gives stopping potential Vo versus wavelength for photoelectrons produced from a metal surface....
The following data gives stopping potential Vo versus wavelength for photoelectrons produced from a metal surface. (Be sure to include the correct units and use three significant figures.) Table 1 Vo (nm) (volts) 50 100 9.33 150 5.19 2003.15 2501.86 300 1.05 21.4 Use an analysis similar to that used in the inlab procedure to determine the work function (in ev) for this surface. (Use1 ev -1.602 x 10-19j, e- 1.602 x 10-19 c,2.998 x 108 m/s, and h ....
When a metal is illuminated by light, photoelectrons are observed provided that the wavelength of the light is less than 606 nm. What is the metal's work function? (c - 3.00 x 10 m/s, h = 6.626 x 10-34 J·s, 1 eV = 1.60 x 10-19)) 25 ev 2.2 eV 24ev 21ev
When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is 1.10 eV .What is the maximum kinetic energy K0 of the photoelectrons when light of wavelength 310 nm falls on the same surface? Use h = 6.63×10−34 J⋅s for Planck's constant and c = 3.00×108 m/s for the speed of light and express your answer in electron volts.
When ultraviolet light with a wavelength of 400 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is 1.10 eV . What is the maximum kinetic energy K0 of the photoelectrons when light of wavelength 340 nm falls on the same surface? Use h = 6.63×10^−34 J⋅s for Planck's constant and c = 3.00×10^8 m/s for the speed of light and express your answer in electron volts. K0= eV
An ultraviolet light beam having a wavelength of 130 nm is incident on a molybdenum surface with work function of 4.2 eV. What is the stopping potential? (h = 6.63 x 10-34 J·s, C = 3.00 x 108 m/s, 1 eV = 1.6 x 10-19 J, and 1 nm = 10-9 m)
Light of wavelength 400 nm is incident on a metal surface. The stopping potential for the resulting electrons is 0.91 V. a) What is the work function of the metal? b) Identify the metal. (Use the Table) c) What is the cut-off frequency for this target? 76 Chapter 3 Waves and Particles 1: Electromagnetic Radia TABLE 3.1 Metal Work Function in eV) Cesium Potassium Sodium Magnesium 19 2.2 2.3 3.7 are ejected if the intensi surable time might be ne...
Question 7 1 pts When light of wavelength , illuminates the surface of Metal 1, the stopping voltage is V. In terms of V, what will be the stopping voltage if the same wavelength is used to illuminate the surface of Metal 2? The work function of Metal 1 is 5.7 eV and the work function of Metal 2 is 2.1 eV. 3.6 volts - V O V-3.6 volts OV+3.6 volts 2.1 volts - V 5.7 volts - V Consider...