Home
Class 11
CHEMISTRY
Define work function of metal and photoe...

Define work function of metal and photoelectric effect.

Text Solution

Verified by Experts

Photoelectric effect is the phenomenon of ejection of electrons from the surface of a metal when light of suitable frequency strikes on it. The ejected electrons are called photoelectrons. Caesium shows this effect more easily due to low ionisation enthalpy.
Promotional Banner

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    OMEGA PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS (MCQ s) |29 Videos

  • STATES OF MATTER

    OMEGA PUBLICATION|Exercise Multiple Choice Questions (MCQs) |29 Videos

  • THE P-BLOCK ELEMENTS

    OMEGA PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS (MCQs)|28 Videos

Similar Questions

Explore conceptually related problems

What is photoelectric effect?

Compare Compton effect and photoelectric effect.

Alkali metals show photoelectric effect. Why ?

OMEGA PUBLICATION-STRUCTURE OF ATOM -MULTIPLE CHOICE QUESTIONS (MCQ s)
  1. Define work function of metal and photoelectric effect.

    Text Solution

    |

  2. Emission of beta -particle is equivatent to:

    Text Solution

    |

  3. The mass of the neutron is of the order of

    Text Solution

    |

  4. The number of electrons and neutrons of an element is 18 and 20 respec...

    Text Solution

    |

  5. Which of the following has longest wavelength ?

    Text Solution

    |

  6. The value of Planck's constant is

    Text Solution

    |

  7. Which of the following expresson gives the de-Broglie relationship ?

    Text Solution

    |

  8. The total number of orbitals possible for the quantum number n is

    Text Solution

    |

  9. The four quantum numbers of the valence electron of potassium are

    Text Solution

    |

  10. An electron has principal quantum number 3. The number of its (i) shel...

    Text Solution

    |

  11. The correct set of quantum numbers for a 4d electron is

    Text Solution

    |

  12. No two electrons in an atom will have all the four quantum numbers sam...

    Text Solution

    |

  13. The correct order of increasing energy of atomic orbitals is

    Text Solution

    |

  14. The energy of an electron in nth orbit of hydrogen atom is

    Text Solution

    |

  15. The triad of nuclei that is isotonic is

    Text Solution

    |

  16. Bohr's model can explain

    Text Solution

    |

  17. If the value of l = 2, what will be the value of principal quantum num...

    Text Solution

    |

  18. Rutherford's experiment on scattering of alpha particles showed for th...

    Text Solution

    |

  19. 3d-orbitals have

    Text Solution

    |

  20. Number of unpaired electrons in the electronic configuration 1s ^(2) ,...

    Text Solution

    |

  21. The two electrons in an orbital have different

    Text Solution

    |