A source of light having wavelength ejects photo electron with maximum kinetic energy 1 eV
PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation
Problem
A source of light having wavelength λ ejects photo electron with maximum kinetic energy 1 eV. On irradiating same metal with wavelength λ/3 , the ejected photoelectron possess kinetic energy of 4eV. The work function of metal is :
(1) 2 eV
(2) 1 eV
(3) 3 eV
(4) 0.5 eV