If a light of wavelength` 5000overset@ A` is incident on a metal surface of work function 6 eV, emission of photoelectrons is possible or not?`[h = 6.63 xx 10^-34 J-S, C = 3 xx 10^8 m//sec]`.

The photoelectric current in a photoelectric cell can be reduced to zero by a stopping potential of 1.8 volt. Monochromatic light of wavelength 2200 overset(@)(A) is incident on the cathode. Find the maximum kinetic energy of the photoelectrons in joules. [Charge on electron = 1.6 xx 10^-19 C ]

The work function for a metal surface is 2.2 eV. If light of wavelength 5000 overset (@)(A) isincident on the surface of the metal,find the threshold frequency and incident frequency.Will there be an emission of photoelectrons or not?

The work function of a metal is 2.5 eV. Light of wavelength 3600 Å is incident on this metal surface. The velocity of emitted photoelectrons will be

Photons of energy 6 eV are incident on a metal surface whose work function is 4 eV . The minimum kinetic energy of the emitted photo - electrons will be

The work function of metal is 1 eV . Light of wavelength 3000 Å is incident on this metal surface . The velocity of emitted photo - electrons will be

The photoelectric threshold wavelength of a metal is 230 nm. Determine the maximum kinetic energy in joule and eV of the ejected electron from metal surface when it is exposed to a radiation of wavelength 180 nm. (Planck's constant h = 6.63 xx 10^-34 J-S, C = 3 xx 10^8 m//sec .)