94.31: Light of a single frequency falls on a photu qc9 ,tcjf93toqz* .wqa zt+0oelectric material but no electrons are emitted. Electrons may be emitcut cf .*q9t j+zqzq,t 9wa3o0ted if the:

  97.36: A student performs the Photoelectric Effect Experiment and obtains- *q0dqbh5rqh h 2domn:7l mt; the data depicted in the accompanying graph ol2th5qm;d :rhdn *q0 qbm h7o-f $E_{Km}$, the maximum kinetic energy of the photoelectrons in eV, versus f, the frequency of the photons in $10^{14}$ Hz. What is the approximate work function for this material?

  96.28: A photon with frequency f behaves as if it had a mass et4pp6pgjggg+gi e4k8 2 za)i9qual to:

  14.32: Planck’s constanx(6s 5zg 5njyq ,vfg+bt is multiplied by the speed of light. The resulting value then is divided by three meters. This final value has the units of which og6ng+,x zq j5bs(5yvf ne of the following quantities?

  10.48: Which of the following wavelengths.qd,3la:i 8u ayy0h sg (in nm) of electromagnetic radiation wi0uds ,:y3y hlia8.gqa ll produce photoelectrons of the least kinetic energy if the radiation is incident on a material with a work function of 4.80 eV?

  12.45: A stationary amo tkn pb 4)996hbxyo9gjig8ht c8b**tom of mass $4.00\times10^{-26}kg$ spontaneously emits a photon of energy 10.0 eV. Which one of the following choices best represents the speed, in units of m/s, of the atom after emitting the photon?

  16.45: Light of wavelength 25 vnkju-0+m ofydm2r530 nm shines onto a metallic surface. It is known that the electrons ejected from the surface range in speed as 0 ≤ v ≤ 2+k yd m-0jm53ourv fn4.85× 105 m/s. What is the work function of the surface?

  06.46: In the photoelectric:ki b43.6ak ,q 3y g2zjwhytyy effect experiment, a stopping potential of V_{stop}$ is needed when light of frequency $f_0$ shines on the electron-emitting metal surface. If the metal surface on which the light shines is replaced with a new material that has half the work function, what is the new stopping potential ???????????????? , for light of frequency $f_0$ shining on it?