Home
Class 12
PHYSICS
Photoelectric threshold wavelength for a...

Photoelectric threshold wavelength for a metal is `2100Å`. If the wavelength of incident radiation be `1800 Å`, will there be any emission of photoelectrons?

Text Solution

Verified by Experts

The correct Answer is:
yes
Promotional Banner

Topper's Solved these Questions

  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Exercise (Short Answer Type Questions- I)|18 Videos
  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Exercise (Short Answer Type Questions- II)|4 Videos
  • QUANTUM THEORY

    CHHAYA PUBLICATION|Exercise Exercise (Multiple Choice Questions)|27 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

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 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) ]

The photoelectric threshold wavelength of radiation incident on its surface is 3415 Å . If the wavelength of radiation incident on its surface 2020 Å , find out the (i) work function and (ii) kinetic energy of the fastest photoelectrons.

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

Write down Einstein's photoelectric equation and mention the symbols used. The photoelectric threshold wavelength for a certain metal is 400 nm. Find the maximum kinetic energy of the emitted electrons from the metal surface by ultraviolet light of wavelength 200 nm. Given, h= 6.63 xx 10^(-34) J.s

Write down Einstein's photoelectric equation and mention the symbols used. The photoelectric threshold wavelength for a certain metal as 400mm. Find the maximum kinetic enrgy of the emitted electrons from the metal surface by ultraviolet light of wavelength 200nm. Given h=6.63xx10^34

For any metal the photoelectric threshold wavelength is 3800overset@A . An ultraviolet wave of wavelength 2000overset@A is incident on the metal then what will be- the maxinum kinetic energy of the photoelectrons. [given— h = 6.62 xx 10^(-34)J.S]

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.

If in a photo-electric experiment, the wavelength of incident radiation is reduced from 6000 Å " to " 4000 Å then

CHHAYA PUBLICATION-QUANTUM THEORY-Exercise (Very Short Answer Types Questions)
  1. Why are alkali metals highly photon-sensitive?

    Text Solution

    |

  2. Express in eV the amount of kinetic energy gained by an electron when ...

    Text Solution

    |

  3. Photoelectric threshold wavelength for a metal is 2100Å. If the wavele...

    Text Solution

    |

  4. Which property of photoelectric particles was discovered from Hertz's ...

    Text Solution

    |

  5. Which property of photoelectric particles was measured from Lenard's e...

    Text Solution

    |

  6. What is the relation between the stopping potential V(0) and the maxim...

    Text Solution

    |

  7. How does the kinetic energy of photoelectrons change due to increase i...

    Text Solution

    |

  8. Give an example of production of photons by electrons.

    Text Solution

    |

  9. Maximum kinetic energy of photoelectrons depends on the of light used...

    Text Solution

    |

  10. In case of photoelectric emission, the maximum kinetic energy of photo...

    Text Solution

    |

  11. Lenard concluded from his experiment that the particles emitted in pho...

    Text Solution

    |

  12. Given an example of production of electrons by photons

    Text Solution

    |

  13. If the intensity of incident radiation on a metal surface is doubled, ...

    Text Solution

    |

  14. Write down the relation between threshold frequency and photoelectric ...

    Text Solution

    |

  15. Which property of light is used to explain the characteristics of phot...

    Text Solution

    |

  16. What is the rest mass of a photons?

    Text Solution

    |

  17. The wavelength of an electromagnetic radiation is lamda. What is the e...

    Text Solution

    |

  18. The light coming from a hydrogen-filled discharge tube falls on sodium...

    Text Solution

    |

  19. In case of photoelectric emission, the maximum kinetic energy of emitt...

    Text Solution

    |

  20. In case of electromagnetic radiation of frequency f, what is the momen...

    Text Solution

    |