it is actually 30% more kinetic
energy not less
it is actually 30% more kinetic energy not less incident photons (2) When monochromatic light with...
When monochromatic light is incident on a metal surface, the maximum kinetic energy of the photoelectrons emitted is 3.10 eV. a. Find the wavelength of the photons striking the metal. b. In what region of the electromagnetic spectrum does this wavelength occur? c. Find the maximum velocity of the photoelectrons.
Electromagnetic radiation is incident on a metallic surface. Electrons are emitted from the surface when the wavelength is 450 nm or less. a) What is the work function of the metal? b) What is the maximum kinetic energy of photo-electrons if the incident light has a wavelength of 400 nm? c) What is the stopping voltage required to stop photo-electrons ejected by the plate when the incident light has a wavelength of 300 nm? d)If the stopping voltage is 5...
When violet light of wavelength 430 nm illuminates a metal surface, the maximum kinetic energy of the photoelectrons is 2.45 eV. (a) What is the work function, (b) What is the maximum speed of photoelectrons when a light beam of wavelength 520 nm illuminates the metal surface? 8 %
When 289-nm photons are incident on the surface of a metal, electrons are ejected from it and the stopping potential is 2.69 V. Find the energy of incident photons: E,= (4.287 eV. Find the kinetic energy of ejected electrons: K= eV. Find the work function of the metal: p= 1.597 ✓ev. Find the wavelength of the least energetic photon that can induce the photo- electric effect in this metal 2 = 778 nm.
2. When light with a wavelength of 223 nm is incident on a certain metal surface, electrons are ejected with a maximum kinetic energy of 3.30 × 10 − 19 J. Determine the wavelength of light that should be used to double the maximum kinetic energy of the electrons ejected from this surface.
2. (3 points) When light with wavelength of 221 nm is incident on a certain metal surface, electrons are ejected with maximum kinetic energy of 3.28 x 1019). a) What is the binding energy (the work function)? Express your answer in ev. b) Find the wavelength of light necessary to double the maximum kinetic energy of the electrons ejected from the metal.
(a) Photoelectrons with a maximum kinetic energy of 7.6eV are emitted from a metal when it is illuminated by ultraviolet radiation with a wavelength of 1.3×102 nm. (i) What is the energy of the incident photons in electronvolts? (ii) What is the wavelength of the radiation (in nanometres) corresponding to the lowest energy photons that can free electrons from the metal? (iii) How do you explain the fact that, when infrared radiation is shone on this metal, no photoelectrons are...
When light with a wavelength of 216 nm is incident on a certain metal surface, electrons are ejected with a maximum kinetic energy of 3.35 × 10-19 J. Determine the wavelength of light that should be used to double the maximum kinetic energy of the electrons ejected from this surface. in m/s with 3 sig figs please
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?...
A detector absorbs 1.0 × 109 photons of monochromatic light and their total energy is found to be 0.33 nJ. What is the wavelength associated with these photons? (h = 6.63 × 10−34 J⋅s, c = 3.00 × 108 m/s) Group of answer choices 540 nm 600 nm 400 nm 500 nm