Home
Class 12
PHYSICS
The work function of a certain metal is ...

The work function of a certain metal is 2.3 eV. If light of wave number `2 xx 10^(6)m^(-1)` falls on it, the kinetic energies of fastest and slowest ejected electron will be respectively.

A

2.48 eV, 0.18 eV

B

0.18 eV, zero

C

2.30 eV, 0.18 eV

D

0.18 eV, 0.18 eV

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CATHODE RAY, PHOTOELECTRIC EFFECT AND X-RAYS

    BITSAT GUIDE|Exercise BITSAT Archives|6 Videos

  • ATOMIC STRUCTURE

    BITSAT GUIDE|Exercise BITSAT Archives|4 Videos

  • CURRENT ELECTRICITY

    BITSAT GUIDE|Exercise Bitsat Archives|26 Videos

Similar Questions

Explore conceptually related problems

The work function of a metal is 3.4 eV. A light of wavelength 3000Å is incident on it. The maximum kinetic energy of the ejected electron will be :

The work function of a metal is 4.2 eV If radiation of 2000 Å fall on the metal then the kinetic energy of the fastest photoelectrn is

The photoelectric work - function of potassium is 2.3 eV. If light having a wavelength of 2800 Å falls on potassium, find (a) the kinetic energy in electron volts of the most energetic electrons ejected. (b) the stopping potential in volts.

The photoelectric work function for potassium is 2 eV . The light of wavelength 3.6 xx 10^(-7) m falls on potassium . The stopping potential is

The work function of a metal is 2.3 eV and the wavelength of incident photon is 4.8 xx 10 ^( -7) m. Find maximum kinetic energy of photo electrons

The work function of a mental is X eV when light of energy 2X eV is made to be incident on it then the maximum kinetic energy of emitted photo electron will be

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)

The photoelectric work function for sodium is 2.7 eV. If light of frequency 9.0xx10^14 Hz falls on sodium, find (a) the stopping potential, (b)the kinetic energy of the most energetic electrons ejected , and (c ) the speed of those electrons.

Work function of a metal surface is phi=1.5eV . If a light of wavelength 5000Å falls on it then the maximum K.E. of ejected electron will be-

If the work function for a certain metal is 3.2 xx 10^(-19) joule and it is illuminated with light of frequency 8 xx 10^(14) Hz . The maximum kinetic energy of the photo-electrons would be (h = 6.63 xx 10^(-34) Js)