Home
Class 12
PHYSICS
The photoelectric threshold 4v is incide...

The photoelectric threshold 4v is incident on the metal is v. When light of frequency 4v is incident on the metal, the maximum kinetic energy of the emitted photoelectron is

A

4hv

B

3hv

C

5hv

D

`(5hv)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
(b) : The Maximum kinetic energy of the emitted electron is given by
`K_(max)=hv-phi_(0)=h(4v)-h(v)=3hv`
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    NCERT FINGERTIPS|Exercise Particle Nature Of Light : The Photon|19 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NCERT FINGERTIPS|Exercise Wave Nature Of Matter|37 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NCERT FINGERTIPS|Exercise Experimental Study Of Photoelectric Effect|11 Videos

  • CURRENT ELECTRICITY

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • ELECTRIC CHARGES AND FIELDS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

The photoelectric threshold frequency of a metal is v. When light of frequency 4v is incident on the metal . The maximum kinetic energy of the emitted photoelectrons is

The photoelectric threshold frequency of a metal is v_0. When ligth of frequency 3v_0 is incident on the metal, the maximum kinetic energy of emitted photoelectrons will be

A light of wavelength 600 nm is incident on a metal surface. When light of wavelength 400 nm is incident, the maximum kinetic energy of the emitted photoelectrons is doubled. The work function of the metals is

Light of frequency 4 v_(0) is incident on the metal of the threshold frequency v_(0) . The maximum kinetic energy of the emitted photoelectrons is

The threshold frequency for a certain metal for photoelectric effect is 1.7x10^(15)Hz . When light of frequency 2.2xx10^(15)Hz is incident on the metal surface, the kinetic energy of the emitted photoelectrons is 3.3xx10^(-19)J . What is the value of the Planck's constant ?

When the frequency fo light incident an a metallic plate is doubled , the 1KE of the emitted photoelectrons will be :

The threshold frequency of a metal is f_0 . When the light of frequency 2f_0 is incident on the metal plate, the maximum velocity of electrons emitted is v_1 . When the frequency of the incident radiation is increased to 5f_0 , the maximum velocity of electrons emitted is v_2 . Find the ratio of v_1 andv_2 .

NCERT FINGERTIPS-DUAL NATURE OF RADIATION AND MATTER -Einstein'S Photoelectric Equation : Energy Quantum Of Radiation
  1. A student performs an experiment on photoelectric effect using two mat...

    Text Solution

    |

  2. Light of wavelength 0.6 mum from a sodium lamp falls on a photocell an...

    Text Solution

    |

  3. When the photons of energy hv fall on a photosensitive metallic surfac...

    Text Solution

    |

  4. The photoelectric threshold 4v is incident on the metal is v. When lig...

    Text Solution

    |

  5. Photoelectric emission occurs only when the incident light has more th...

    Text Solution

    |

  6. The work function for Al, K and is 4.28 eV, 2.30 eV and 5.65 eV respec...

    Text Solution

    |

  7. The photoelectric threshold wavelength for silver is lamda(0). The ene...

    Text Solution

    |

  8. A photon of energy E ejects a photoelectron from a metal surface whose...

    Text Solution

    |

  9. Two identical photocathodes receive light of frequencies v(1) and v(2)...

    Text Solution

    |

  10. A metallic surface is irradiated by a monochromatic light of frequency...

    Text Solution

    |

  11. If K(1) and K(2) are maximum kinetic energies of photoelectrons emitte...

    Text Solution

    |

  12. The work function of cesium is 2.14 eV. The threshold frequency of ces...

    Text Solution

    |

  13. In the question number 33, find the wavelength of the incident light i...

    Text Solution

    |

  14. represents a graph of most energetic photoelectrons K(max)(in eV) and ...

    Text Solution

    |

  15. Light of frequency 7.21xx10^(14)Hz is incident on a metal surface. Ele...

    Text Solution

    |

  16. For a certain metal v is the five times of v(0) and the maximum veloci...

    Text Solution

    |

  17. A light of wavelength 600 nm is incident on a metal surface. When ligh...

    Text Solution

    |

  18. The threshold frequency of a certain metal is 3.3xx10^(14)Hz. If light...

    Text Solution

    |

  19. A and B are two metals with threshold frequencies 1.8xx10^(14)Hz and 2...

    Text Solution

    |

  20. The stopping potential as a function of the frequency of the incident ...

    Text Solution

    |