Home
Class 12
PHYSICS
A metal sheet of silver is exposed to ul...

A metal sheet of silver is exposed to ultraviolet radiation of wavelength `1810A^(0)`. The threshold wavelength of silver is `2640A^(0)` Calculate the maximum energy of emitted electron.

A

3.15 eV

B

4.15 eV

C

5.15 eV

D

2.15 eV

Text Solution

Verified by Experts

The correct Answer is:
D
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

A metal of work function 4eV is exposed to a radiation of wavelength 140xx10^(-9) m. Find the stopping potential developed by it.

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 photoelectric threshold wavelength for a certain metal is 4000A^(@) . The maximum energy of the ejected photoelectrons by a radiation of 2000A^(@) is

The frequency associated with photon of radiation having a wavelength of 6000 A^0 is

A radiation of wave length 3000 Å is required to remove an electron from a metal atom. If a radiation of wave length 2000Å is allowed to incident on the metal surface, the kinetic energy of the emitted electron in k/J mole is

The work function for Cesium atom is 1.9 eV . Calculate the threshold frequency of the radiation . If the Cesium element is irradiated with a wavelength of 500 nm , calculate the kinetic energy of the ejected photoelectron .

The kinetic energy of an electron is 4.55xx10^(-28) kJ . Calculate the de Broglie's wavelength.

Electrons are emitted with zero velocity from a metal surface when it is exposed to radiation of wavelength 6800 Å. Calculate threshold frequency (V_(0)) and work function (W_(0)) of metal.

Initially a photon of wavelength lambda_(1) falls on the photocathode and emits of maximum energy E_(1) .If the wavelength of the incident photon is changed to lambda_(2) the maximum energy of the electron emitted becomes E_(2) .Then value of he (h=Planck's constant,c= velocity of light) is

AAKASH SERIES-DUAL NATURE OF RADIATION AND MATTER-PRACTICE EXERCISEX
  1. If the work function of a certain metal is 3.2xx10^(-19)J and is it il...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  19. If v(K(alpha)),v(K(beta)) and v(L(alpha)) are the frequencies of K(alp...

    Text Solution

    |

  20. The energy of a photon is equal to the kinetic energy of a proton. If ...

    Text Solution

    |