Home
Class 12
PHYSICS
A metal has a work function of 2eV. It i...

A metal has a work function of 2eV. It is illuminated by monochromatic light of wavelength 500 nm, calculate (i) the threshold wavelength, (ii) the maximum energy of photoelectrons, (iii) The stopping potential. Given Planck's constant `h = 6.6 xx 10^(-34)J.s`, charge on electron `e = 1.6 xx 10^(-19) C and 1eV = 1.6 xx 10^(-19)J`

Text Solution

Verified by Experts

618.75 nm, `0.76 xx 10^(-19)J, 0.475 V`
Promotional Banner

Topper's Solved these Questions

  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Exercise (Hots Numerical Problems)|4 Videos
  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Entrance Corner (Assertion- Reason Type)|10 Videos
  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Exercise (Problem Set- I)|41 Videos
  • OPTICAL INSTRUMENTS

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|8 Videos
  • QUESTION PAPER OF NEET 2017

    CHHAYA PUBLICATION|Exercise QUESTION PAPERS OF (NEET) (2017)|39 Videos

Similar Questions

Explore conceptually related problems

Find out the photoelectric threshold wavelength of copper. Given work function of copper = 4.52eV, h = 6.6 xx 10^(-34)J.s, 1 eV = 1.6 xx 10^(-19)J

What is the de Broglie wavelength related to an electron of energy 100 eV ? (Given, mass of electron, m = 9.1 xx 10^(-31) kg, " " e = 1.6 xx 10^(-19) C and h = 6.63 xx 10^(-34) J.s )

A photon of energy 8eV is incident on a metal plate with threshold frequency 1.6 xx 10^(15) Hz. The maximum kinetic energy of the emitted photo electrons is (given h= 6 xx 10^(-34) Js )

Calculate the energy in joule correspending to light of wavelength 45nm. (Planck's constant h= 6.63xx10^-34 Js, speed of light c= 3xx10^8m/s ).

Find de Broglie wavelength of neutron at 127^(@)C Given, Boltzmann constant, k = 1.38 xx 10^(-23) J.mol^(-1).K^(-1) , Planck's constant, h = 6.626 xx 10^(-34)J.s , mass of neutron, m = 1.66 xx 10^(-27) kg

Photoelectric threshold wavelength for a metal is 3800 Å . Find the maximum kinetic energy of emitted photoelectron, when ultraviolet radiation of wave length 2000Å is incident on the metal surface. Planck's constant, h = 6.62 xx 10^(-34) J.s

For what kinetic energy of neutron will the associated de Broglie wavelength be 1.40 xx 10^(-10)m ? The mass of neutron is 1.675 xx 10^(-27) kg and h = 6.63 xx 10^(-34) J.s

Calculate the energy in joule corresponding to light of wavelength 45 nm. (plancks constant, h=6.63xx10^(-34)J*s , speed of light c=3xx10^(8)m*s^(- ))-

Find out the temperature at which the average kinetic energy of a gas molecule will be equal to the energy gained by an electron on acceleration across a potential difference of 1V, Given Boltzman constant= 1.38 times 10^-23 J.K^-1 , charge of an electron = 1.6 times 10^-19 C .

For photoelectric emission, threshold wavelength of a metal is 2460 Å . If ultraviolet light of wavelength 1810 Å be incident on the metal, what will be the maximum kinetic energy of the emitted electrons? [Planck's constant = 6.62xx10^(-34) J.s , velocity of light in veccuum = 3xx10^(8) m.s^(-1) ]