Home
Class 12
PHYSICS
Light of wavelength 5000Å falls on a met...

Light of wavelength 5000Å falls on a metal surface of work function 1.9eV. Find (i) the energy of photons in eV (ii) the kinetic energy of photoelectrons and (iii) the stopping potential. Use `h=6.63xx10^(-34)Js`,
`c=3xx10^8ms^-1 , e=1.6xx10^-9C.`

Promotional Banner

Topper's Solved these Questions

  • ELECTRONS AND PHOTONS

    SL ARORA|Exercise Problem Solution|19 Videos

  • ELECTRONS AND PHOTONS

    SL ARORA|Exercise TYPE A : Problem For Self Practice|21 Videos

  • ELECTROMAGNETIC WAVES

    SL ARORA|Exercise Problem for self-practice|21 Videos

  • ELECTROSTATIC FORCES, CHARGES AND FIELDS

    SL ARORA|Exercise Problems For Self Practice|1 Videos

Similar Questions

Explore conceptually related problems

Light of wavelenght 5000 Å fall on a metal surface of work function 1.9 eV Find a. The energy of photon b. The kinetic energy of photoelectrons

Light of wavelength 5000 Å falls on a sensitive plate with photoelectric work function of 1.9 eV . The kinetic energy of the photoelectron emitted will be

A radiation of wave length 2500A^(0) is incident on a metal plate whose work function is 3.5eV . Then the potential required to stop the fastest photo electrons emitted by the surface is (h=6.63xx10^(-34)Js & c=3xx10^(8)m//s)

A metal has a work function of 2.0 eV and is illuminated by monochromatic light of wavelength 500nm. Calculate (a) the threshold wavelength (b) the maximum energy of photoelectrons (c) the stopping potential. [use h= 6.63xx10^(-34) J, c=3xx10^8ms^-1 ]

Light of wavelength 4000Å is allowed to fall on a metal surface having work function 2 eV. The maximum velocity of the emitted electrons is (h=6.6xx10^(-34)Js)

The work function of a metal is 2.5eV . The maximum kinetic energy of the photoelectrons emitted if a radiof wavelength 3000A^(0) falls on it is (h=6.63xx10^(-34)Js & c=3xx10^(8)m//s)

The energy of X-ray photon of wavelength 1.65 Å is (h=6.6 xx 10^(-34)J-sec,c=3xx10^(8)ms^(-1),1eV=1.6xx10^(-19)J)