Questions in Dual Nature of Radiation and Matter

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Light of frequency $4\nu _0$ is incident on the metal of the threshold frequency $\nu _0$. The maximum kinetic energy of the emitted photoelectrons is
By photoelectric effect, Einstein, proved
The work function of sodium is 2.3 eV. The threshold wavelength of sodium will be
Which of the following shown particle nature of light
Two identical photo-cathodes receive light of frequencies ${f_1}$ and ${f_2}$. If the velocities of the photo electrons (of mass $m$) coming out are respectively ${v_1}$ and ${v_2}$, then
Consider the two following statements A and B and identify the correct choice given in the answers; (A) In photovlotaic cells the photoelectric current produced is not proportional to the, intensity of incident light. (B) In gas filled photoemissive cells, the velocity of photoelectrons depends on the wavelength of the incident radiation.
When radiation of wavelength $\lambda $ is incident on a metallic surface, the stopping potential is 4.8 volts. If the same surface is illuminated with radiation of double the wavelength, then the stopping potential becomes 1.6 volts. Then the threshold wavelength for the surface is
The frequency and work function of an incident photon are ? and ${\varphi _0}$. If $\nu _0$ is the threshold frequency then necessary condition for the emission of photo electron is
Light of wavelength 1824 Å, incident on the surface of a metal, produces photo-electrons with maximum energy 5.3 eV. When light of wavelength 1216 Å is used, the maximum energy of photoelectrons is 8.7 eV. The work function of the metal surface is
If the energy of a photon corresponding to a wavelength of 6000 Å is $3.32 \times {10^{ - 19}}J$, the photon energy for a wavelength of 4000 Å will be

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