Home
Class 12
PHYSICS
Above the threshold wavelength for a met...

Above the threshold wavelength for a metal surface, even a light of low intensity can emit photoelctrons. Is the statement true?

Text Solution

Verified by Experts

The correct Answer is:
no
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

When light of wavelength 4041 Å falls on a metal surface, the maximum velocity of the emitted photoelectrons becomes twice the maximum velocity when another light of wavelength 5893 Å falls on the same surface. What is the photoelectric work function of that metal?

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

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

For a monochromatic light incident on a metal surface, the maximum velocity of the emitted photoelectrons is v. Then the stopping potential would be

For a monochromatic light incident on a metal surface, the maximum velocity of the emitted photoelectrons is v. Then the stopping potential would be

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 a monochromatic light incident on a metal surface, the maximum velocity of emitted photoelectrons is v. Then the stopping potential would be

thresold Wavelength of incident light on a metal surface is 404 Å . Determine the work function.

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) ]

Light rays of wavelength lambda and lambda/2 are incident on a a photosensitive metal surface, IF the maximum kinetic energy of the emitted photoelectrons from the metal surface in 2nd case be 3 times the maximum kinetic energy of emitted photoelectrons in the 1st case then determine the work function of the metal.

CHHAYA PUBLICATION-QUANTUM THEORY-Exercise (Very Short Answer Types Questions)
  1. Below a minimum frequency of light, photoelectric emission does not oc...

    Text Solution

    |

  2. Above the threshold wavelength for a metal surface, even a light of lo...

    Text Solution

    |

  3. What will be the effect on the velocity of emitted photo-electron if t...

    Text Solution

    |

  4. Why are alkali metals highly photon-sensitive?

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  15. Given an example of production of electrons by photons

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  19. What is the rest mass of a photons?

    Text Solution

    |

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

    Text Solution

    |