94.31: Light of a single frequency falls on a photoelectric material but no e:hq4jva* ,ufk/8dbuy lectrons are emitted. Electrons may be emittedjk4 yu /,h:aq bu8dfv* if the:

  97.36: A student performs the Photoelectric Effect Experiment and ofu 0x 9ctjryudykt* 609 qt5*qbtains the data depicted in the 09cru9 kj u5*qyx ftq06t*yd taccompanying 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 b3:qyvf0nxm+jo *1j igehaves as if it had a mass equal to:

  14.32: Planck’s constant is multiplied by the speed of light. The,n30j9r whi qa resulting value then is divided by three meters. This final value has the units of whichi90 w3j nhr,qa one of the following quantities?

  10.48: Which of the following wavelx)l-qbx:al xv n:9u*xpc kl)wggs 547engths (in nm) of electromagnetic radiation will produce photoelectrons of the least kinetic energy if the radiation iu-n9xqsbl gv) x c4p5l)xgw:l:*k 7xas incident on a material with a work function of 4.80 eV?

  12.45: A stationary atom of m+9pu3 8jemvzu pih;im+-u s9ke kt5:aass $4.00\times10^{-26}kg$ 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 knehory33lh-ysmp32i 6hb6o(a own that the electrons ejected from the surface range in speed as 0 ≤ v ≤ 4.85× 105 m/s. What is the work function l2m hr(oeo3h h3a6yi6-yp s3bof the surface?

  06.46: In the photoelectric effect experiment, a stoppg,wjwc,)ctxb)w -dhok9 3m.p ing 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?