A photon has a wavelength of 50 nm. What is the de Broglie wavelength of an electron that has the same momentum as this photon? ОО OO 0.25 nm 150 nm 50 nm 2.0 nm not enough information given

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Electrons striking the back of a conventional TV screen travel at a speed of about 2.7 ✕ 107 m/s. What is their de Broglie wavelength (in nm)?

A photon of wavelength 0.90638 nm strikes a free electron that is initially at rest. The photon is scattered straight backward. What is the speed of the recoil electron after the collision? V = i ! m/s

Light with a single wavelength of 490 nm impacts a metal surface releasing an electrons.  How much energy in Joules is in each photo of this light? ________ What is the energy in eV of a photon whose wavelength is 490 nm?________ Light with a single wavelength of 490 nm impacts a metal surface releasing an electrons.  If the released electrons each have an energy of 1.9 eV, what is the work function of the metal in eV? _____ f the light source were brought closer to the surface so that the light reaching the surface was brighter which would change? ______

Tantalum has a work function of 4.2 eV. The most energetic photoelectron has KE of 2.12 eV. What is the wavelength of the incoming photons? a) 586 nm                            b) 197 nm                       c) 296 nm                        d) none of these.

Determine the wavelength of an electron that has a kinetic energy of 1.15 × 10 J. Report your answer in units of nm.

A metal has a work function of 3.1eV and is illuminated by light of wavelength A = 320 nm. What is the maximum velocity of the photoelectrons emitted? Select one: а. 2.7 x 106 m/s b. 3.2 x 10' m/s С. 5.9 x 105 m/s O d. 5.24 x 105 m/s

An X-ray photon has a wavelength of 0.01 nm. What is the de Broglie wavelength of an electron that has the same energy as the X-ray photon? O 1.5 X 10-3 nm O 3.0 X 10-3 nm O 3.5 X 10-3 nm O 4.0 X 10-3 nm O 2.0 X 10-3 nm O 2.5 X 10-3 nm

During a certain experiment, the de Broglie wavelength of an electron is 610 nm = 6.1 x 10- m, which is the same as the wavelength of orange light. How fast (in m/s) is the electron moving? m/s