Home
Class 12
PHYSICS
The work function for cesium is 1.8 eV. ...

The work function for cesium is 1.8 eV. A light of wavelength `5000 Å` is incident on it. Calculate (i) maximum kinetic energy of emitted electrons, (ii) threshold frequency and threshold wavelength and (iii) maximum velocity of the emitted electrons

Text Solution

Verified by Experts

(i) `1.08 xx 10^(-19)J`, (ii) `4.363 xx 10^(14)Hz, 6.875 xx 10^(-7)m`, (iii) `4.9 xx 10^(5) m.s^(-1)`
Promotional Banner

Topper's Solved these Questions

  • QUANTUM THEORY

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

  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Entrance Corner (Multiple Correct Answer Type)|10 Videos

  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Exercise (Problem Set- II)|15 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

The work function of a metal surface is 2.0 eV. Light of wavelength 5000 Å is incident on it:

The work function for cesium atom is 1.9 eV. Calculate the threshold wavelength.

What will be the kinetic energy of emitted photoelectrons if light of threshold frequency falls on a metal?

Work function for a metal is 1.77 eV and the wavelength of an incident ray on that metal is 5893 Å . Determine the maximum kinetic energy of the photoelectrons emitted from that metal.

If the photoelectric threshold wavelength of metallic silver is 3500 Å , and UV light of wavelength 2000 Å falls on it, find (i) the maximum kinetic energy of the photoelectrons, (ii) the maximum velocity of the photoelectrons, (iii) the value of work function of silver in joule

The threshold frequency of a metal is f_(0) . When the light of frequency 2f_(0) is incident on the metal plate, the maximum velocity of electrons is v_(1) . When the frequency of the incident radiation is increased to 5f_(0) , the maximum velocity of electron emitted is v_(2) . Find the ratio of v_(1) to v_(2) .

The work function for electron emission from a metal is 1.9 eV, and the wavelength of the radiation incident on its surface is 4041 Å . Find out the kinetic energy of the fastest photoelectrons.

Work functions of two metals A and B are 3.1 eV and 1.9 eV respectively. Light of wavelength 3000 Å is incident on both the surfaces.

In case of photoelectric emission, the maximum kinetic energy of emitted electrons depends linearly on the _______ of incident radiation