The work function of a metal is `1.6 xx 10^-19J`. The metal surface is illuminated by light of wavelength `6400overset@ A`. What will be the maximum kineticenergy of photoelectrons emitted.

The work function of a material is 5.26 xx 10^-19J . Calculate its threshold frequency.

The work function of silver is 5.26 xx 10^-19J . Calculate its threshold wavelength.

The work function of caesium metal is 2.14 eV. When light of frequency 6 xx 10^14 Hz is incident on the metal surface, photoemission of electrons occurs.What is the maximum kinetic energy of the emitted electrons ?

The photoelectric work function of a photo-sensitive metal is 3 xx10^-19 J. Calculate the threshold wavelength.

Photoelectric work function of a metal is 3 eV. Find the maximum speed of photoelectrons emitted when radiation of wavelength 4000overset@ A is incident on the metal surface. (Given: mass of electron = 9.1 xx 10^-31 kg )

The work function of caesium metal is 2.14 eV. When light of frequency 6 xx 10^14 Hz is incident on the metal surface, photoemission of electrons occurs. What is the maximum speed of the emmited photoelectrons ?

A photoelectric surface is illuminated successively by monochromatic light of wavelength lambda and (lambda)/(2) . If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times than in the first case , the work function of the surface of the material is ( h = Plank's constant , c = speed of light )

When a metal surface is illuminated by a monochromatic light of wave-length lambda , then the potential difference required to stop the ejection of electrons is 3V . When the same surface is illuminated by the light of wavelength 2lambda , then the potential difference required to stop the ejection of electrons is V . Then for photoelectric effect, the threshold wavelength for the metal surface will be