94.31: Light of a single frequency falls on a photoelectric majv28udnumsm +/t(fm k1 /9 ngiterial but no electrons are emitted. Electrons may be unigtvk( 9/j1/dn m 8mm+f2suemitted if the:

  97.36: A student perfowa-fp p)ha 2at(z5;ip rms the Photoelectric Effect Experiment and obtains the data depicted in the accompanyi wiz-2paap;)(5hp tfa ng graph of $E_{Km}$, 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 beharq8rm +av16x)a39hvp 5h l7psuai-gfves as if it had a mass equal to:

  14.32: Planck’s constant is multiplied by the speed of light. The resulting val2cgeg* jo(p/u ue then is divided by three meters. This final valu g */e(ogjpc2ue has the units of which one of the following quantities?

  10.48: Which of the following wav6)0 lbae /wt jh,gu y;i68is9vs/gspk elengths (in nm) of electromagnetic radiation will produce photoelectrons of the least kinetic energy if the radiation is incident on a material witw6phiy8e asbv ;6si/t /g) k s0,g9julh a work function of 4.80 eV?

  12.45: A stationary atom of z 8f1m*v4 2ny7j alyi2ngv/e mmass $4.00\times10^{-26}kg$ 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 250 nm shines onto a metallic surface. It is kjq3k +o08mveh*3ha4hc +9z srms.tq gnown that the electrons ejected from the surface range in speed as 0 ≤ v ≤ 4.85× 105 m/s. What is th vcg.mq h33zsh+e+k4 sqah 8t*jr 9o0me work function of the surface?

  06.46: In the photoelectric effect expel 34)dks)e lmcriment, 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?