Home
Class 12
PHYSICS
If the work function of a certain metal ...

If the work function of a certain metal is `3.2xx10^(-19)J` and is it illuminated with light of frequency `8xx10^(14)` Hz, the maximum kinetic energy of photo electrons would be `(h=6.6xx10^(-34)Js)`

A

`2.1xx10^(-19)J`

B

`8.5xx10^(-19)J`

C

`5.3xx10^(-19)J`

D

`3.2xx10^(-19)J`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    AAKASH SERIES|Exercise EXERCISE=II|42 Videos

  • CURRENT ELECTRICITY

    AAKASH SERIES|Exercise EXERCISE - III|73 Videos

  • ELECTRIC CHARGES AND FIELDS

    AAKASH SERIES|Exercise Practice Exercise|57 Videos

Similar Questions

Explore conceptually related problems

Work function of a metal is 3.0 eV. It is illuminated by a light of wavelength 3xx10^(-7) m. Calculate the maximum energy of the electron.

The work function of a certain metal is 3.31xx10^-(-19) j then, the maximum kinetic energy of photoelectrons emitted by incident radiation of wavelength 5000 ÅIS1(GIVEN,H= 6.62XX10^(-34)J_(-s),c=3xx10^(8)ms^(-1),e=1.6xx10^(-19)C)

The photoelectric work function of a metal surface is 2eV.When light of frequency 1.5xx10^(15) Hz is incident on it, the maximum kinetic energy energy of the photo electrons ,approximately is

Find the momentum of an electron having wavelength 2A^(0)(h=6.62xx10^(-34)Js)

The work function of a metal is 3.0 V. It is illuminated by a light of wave length 3xx10^(-7)m . Calculate i) threshold frequency, ii) the maximum energy of photoelectrons, iii) the stopping potential. (h=6.63xx10^(-34)Js and c=3xx10^(8)ms^(-)) .

The threshold frequency for a certain metal is 3.3xx10^(14) Hz. If light of frequency 8.2xx10^(14) Hz is incident on the metal, predict the cut-off voltage for the photoelectric emission.

The work function a metel is 2 eV. If a radiation of wavelengh 3000 A^(@) is incident on it, the maximum kinetic energy of the emitted photoelectros is (Plank's constant h = 6.6 "times "10^(-34) J, velocity of light c=3" times "10^8 ms//s, 1 eV=1.6 "times "10^(-19)

The work function of potassium is 2.0 eV. When it is illuminated by light of wavelength 3300A^(@) photo electrons are emitted. The stopping potential of photo electrons is [Plank’s constant h=6.6xx10^(-34)Js,1eV=1.6xx10^(-19)J,C=3xx10^(8)ms^(-1) ]

Threshold frequency of a metal is 5 xx 10^(13)s^(-1) upon which 1xx10^(14)s^(-1) frequency light is focussed. Then the maximum kinetic energy of emitted electron is

AAKASH SERIES-DUAL NATURE OF RADIATION AND MATTER-PRACTICE EXERCISEX
  1. V(1) and V(2) are the stopping potentials for the incident radiations ...

    Text Solution

    |

  2. A monochromatic light source is placed at a distance d from a metal su...

    Text Solution

    |

  3. If the work function of a certain metal is 3.2xx10^(-19)J and is it il...

    Text Solution

    |

  4. Work function of a metal is 3.0 eV. It is illuminated by a light of wa...

    Text Solution

    |

  5. A metal sheet of silver is exposed to ultraviolet radiation of wavelen...

    Text Solution

    |

  6. The threshold wavelength for emission of photoelectrons from a metal s...

    Text Solution

    |

  7. What will be the minimum frequency of light source to get photocurrent...

    Text Solution

    |

  8. A stationary shell of mass M explodes in to two parts and their masses...

    Text Solution

    |

  9. The graph between deBroglie wavelength (lamda) and (lamdap) is (p is t...

    Text Solution

    |

  10. The de Broglie wavelength of an electron is 1A^(@). In what potential ...

    Text Solution

    |

  11. If the velocity of the particle reduced to one third, then the percent...

    Text Solution

    |

  12. The ratio of the deBroglie wavelengths of proton, deuteron and alpha p...

    Text Solution

    |

  13. Find the momentum of an electron having wavelength 2A^(0)(h=6.62xx10^(...

    Text Solution

    |

  14. Calculate the wavelength of de Broglie waves associated with a beam of...

    Text Solution

    |

  15. Calculate the force experienced by a moving electron which is entering...

    Text Solution

    |

  16. If electrons are accelerated through a potential of V volt, the minimu...

    Text Solution

    |

  17. Most probable value of energy of X-ray photon in the values given is

    Text Solution

    |

  18. An X-ray tube is operated at a potential of 42,000V. The maximum frequ...

    Text Solution

    |

  19. With a d.c power supply giving 10mA at a p.d of 50 kV. The power of th...

    Text Solution

    |

  20. Iron (z = 26) emits k(alpha) line of wavelength 1.96A^(@). For an elem...

    Text Solution

    |