94.31: Light of a single frequency falls on a photoelectric matmr w oh5vkt;n u*d+p35erial but no electrons are emitted. Electrons ma u ohr*m5wknd3p5t+ v;y be emitted if the:

  97.36: A student performs the Photoelectric Effect Experi/*3e 9klomxdy9 uk5 n 3,g vggp,(gpylment and obtains the data depicted in the accomgg3gxl( p3,yk5mve*k 9uy9 go,/ lnd ppanying 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 behaves aso;q oc i g7d/*u*gmox9 kjbo+9 if it had a mass equal to:

  14.32: Planck’s constant is6rg6sqy/ :git je4nv7 multiplied by the speed of light. The resulting value then is divided by three meters. This final value has th:jq7eriyg 6/4vts 6ng e units of which one of the following quantities?

  10.48: Which of the following wav lr x8c1f8wwr6-yl qhzm(o5 v:elengths (in nm) of electromagnetic radiation will produce photoelectrons of the least kinetic energy if the radiation is incident on a material wit (r5wr6c81-zlyxf 8h wl:vqmoh a work function of 4.80 eV?

  12.45: A stationary athla* xjws8 m1.om 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 250yq+o9z0 ft6mvnjc i47iwzi,i 3j8p7a nm shines onto a metallic surface. It is known that the electrons ejected from the surface range in speed as 0 ≤ v ≤ 4.85× 105 m/s. What is the work function o,n +f ji 4cm09q7wyo zii8vt6 3z7jaipf the surface?

  06.46: In the photoelectric effect experiment, a stopping potential of dbkbonl10u/3 i gn u,pu2-xn1V_{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?