Home
Class 12
PHYSICS
Which light when falls on a metal will e...

Which light when falls on a metal will emit photoelectons ?

A

uv radiation

B

infrared radiation

C

radio waves

D

microwaves

Text Solution

Verified by Experts

The correct Answer is:
A
Ultraviolet radiation, being of high frequency, can emit photoelectrons from metals.
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    FULL MARKS|Exercise ADDITIONAL QUESTIONS -(SHORT ANSWER QUESTIONS )|7 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    FULL MARKS|Exercise ADDITIONAL QUESTIONS -( LONG ANSWER QUESTIONS )|7 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    FULL MARKS|Exercise TEXTUAL EVALUATION SOLVED -( NUMERICAL PROBLEMS)|15 Videos

  • CURRENT ELECTRICITY

    FULL MARKS|Exercise Additional Questions Solved (Numerical Problems)|6 Videos

  • ELECTROSTATICS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED ( VII. NUMERICAL PROBLEMS )|5 Videos

Similar Questions

Explore conceptually related problems

Light of wavelength 3500 A^(@) is incident on two metals A and B. Which metal will yield photoelectrons, if their work functions are 4.2 eV and 1.9 eV respectively ?

Two beams, one of red light and the other of blue light, of the same intensity are incident on a metallic surface to emit photoelectrons. Which one of the two beams emits electrons of greater kinetic energy ?

The work function of a metal is hv_(0) . Light of frequency v falls on this metal. The photoelectric effect will take place only if

Photons of 5.5 eV energy fall on the surface of the metal emitting photoelectrons of maximum kinetic energy 4.0 eV. The stopping voltage required for these electrons is

The work functions for metals A,B and Care 1.92 eV, 2.0 eV and 5.0 eV respctively. The metals which will emit photoelectrons for a radiation of wavelength 4100Å is // are

Light of wavelength falls on a metal having work function ( h_(c ))/( lambda_(0)) . Photoelectric effect will place only if

FULL MARKS-DUAL NATURE OF RADIATION AND MATTER-ADDITIONAL QUESTIONS -(MULTIPLE CHOICE QUESTIONS )
  1. Photoelectric effect can be explained by

    Text Solution

    |

  2. Which of the following waves can produce photoelectric effect ?

    Text Solution

    |

  3. Which light when falls on a metal will emit photoelectons ?

    Text Solution

    |

  4. In photoelectric effect, the KE of electrons emitted from the metal su...

    Text Solution

    |

  5. In photoelectric effect, electrons are ejected from metals, if the inc...

    Text Solution

    |

  6. Number of ejected photoelectrons increases with increases

    Text Solution

    |

  7. By photoelectric effect, Einstein proved

    Text Solution

    |

  8. A photocell employs photoelectric effect to convert

    Text Solution

    |

  9. When ultraviolet rays incident on metal plate there photoelectric effe...

    Text Solution

    |

  10. The threshold frequency for photoelectric effect on sodiune correspond...

    Text Solution

    |

  11. The photoelectric work function for a metal surface is 4.125 eV. The c...

    Text Solution

    |

  12. Ultraviolet radiations of 6.2 eV falls on an aluminium surface. Kineti...

    Text Solution

    |

  13. The de-Broglie wavelength of a tennis ball of mass 60g moving with a v...

    Text Solution

    |

  14. The wavelength of de-Broglie wave is 3 mu m, then its momentum (h = 6....

    Text Solution

    |

  15. What is de-Broglie wavelength of electron having energy 10 KeV ?

    Text Solution

    |

  16. Which one of the following property does not support wave theory of li...

    Text Solution

    |

  17. de-Broglie wavelength lambda associated with neutrons is related with ...

    Text Solution

    |

  18. As the intensity of incident light increases

    Text Solution

    |

  19. The de Broglie wave corresponding to a particle of mass m and velocity...

    Text Solution

    |

  20. If particles are moving with same velocity, then which has maximum de-...

    Text Solution

    |