A metal having work function `4.41xx10^(-19) J` is sunjected to a light having wavelength 300nm, then maximum kinetic energy of the emitted photoelectron is `...........xx10^(-21)J`

A metal surface having a work function phi = 2.2 xx 10^(-19) J , is illuminated by the light of wavelengh 1320Å . What is the maximum kinetic energy ( in eV ) of the emitted photoelectron ? [Take h = 6.6 xx 10^(-34) Js ]

The work function of a metal is 1.6 xx 10^(-19) J . When the metal surface is illuminated by the light of wavelength 6400 Å , then the maximum kinetic energy of emitted photo - electrons will be (Planck's constant h = 6.4 xx 10^(-34) Js )

Light of frequency 8 xx 10^(15) Hz is incident on a substance of photoelectric work function 6.125 eV . The maximum kinetic energy of the emitted photoelectrons is

The work function of sodium metal is 4.41xx10^(-19)J . If photons of wavelength 300 nm are incident on the metal, the kinetic energy of the ejected electrons will be (h=6.63xx10^(34)Js,c=3xx10^(8) m/s ______ xx10^(-21)

A light of wavelength 600 nm is incident on a metal surface. When light of wavelength 400 nm is incident, the maximum kinetic energy of the emitted photoelectrons is doubled. The work function of the metals is

The work function of a metal is 4.0 eV . If the metal is irradiated with radiation of wavelength 200 nm, then the maximum kinetic energy of the photoelectrons would be about.

The work fuction of caseium is 1.8 eV. Light of 4500Å is incident on it. Calculate (i) the maximum kinetic energy of the emitted photoelectrons (ii) maximum velocity of the emitted photoelectrons (iii) if the intensity of the incident light is doubled, then find the maximum kinetic energy of the emitted photoelectrons. Given, h=6.63xx10^(-34)Js.m_(e)=9.1xx10^(-31)kg, c=3xx10^(8)ms^(-1)

A sodium (Na) surface is illuminated with light of wavelength 300 nm . The work function for Na metal is 2.46eV . The kinetic enegry of the ejected photoelectrons is