Home
Class 12
PHYSICS
When radiation is incident on a photoele...

When radiation is incident on a photoelectron emitter, the potential is found to be 9V. If `e//m` for the electron is `1.8cc10^(11)C//kg`, the maximum velocity of the ejected electron is

A

`6xx10^(5)m//s`

B

`8xx10^(5)m//s`

C

`10^(6)m//s`

D

`1.8xx10^(6)m//s`

Text Solution

Verified by Experts

The correct Answer is:
d
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    PRADEEP|Exercise Value based question|1 Videos

  • CURRENT ELECTRICITY

    PRADEEP|Exercise Problems for Practice (B)|2 Videos

  • ELECTROMAGNETIC INDUCTION & ALTERNATING CURRENT

    PRADEEP|Exercise Multiple Choice Questions|1 Videos

Similar Questions

Explore conceptually related problems

When radiation is incident on a photoelectron emitter , the stopping potential is found to be 9 volts . If e//m for the electrons is 1.8 xx 10^(11) C kg^(-1) the maximum velocity of the ejected electrons is

Radiation is incident on a photosensitive surface and the stopping potential is found to be 9 V. What is the maximum velocity of the ejected photo electrons if the specific charge of the electron is 1.8xx10^(11) C/kg ?

An electron is accelerated through a potential difference of 200 volts. If e//m for the electron be 1.6 xx 10^(11) coulomb/kg, the velocity acquired by the electron will be

The work function for calcium is 2.14 eV. When a light of wavelength 5500Å is incident on it, photoelectrons are emitted , Calculate (i) threshold frequency and threshold wavelength. (ii) maximum velocity of the emitted electrons. (iii) change in maximum kinetic energy of the emitted photoelectrons if the intensity of the incident light is doubled. Take : h = 6.6 xx10^(-34) Js m_e-9xx10^(-31) kg c= 3xx10^8m//s

In an electron gun, the electrons are accelerated by the potential V . If the e is the charge and m is the mass of the electron, then the maximum velocity of these electrons will be

if e/m of electron is 1.76xx10^(11)C(kg)^(-1) andn stopping potential is 0.71 V, then the maximum velocity of the photoelectron is

Maximum velocity of photoelectron emitted is 4.8 ms^(-1) . If e/m ratio of electron is 1.76xx10^(11)Ckg^(-1) , then stopping potential is given by

In a photoelectric experiment, the potential required to stop the ejection of electrons from cathode is 4V. What is the value of maximum kinetic energy of emitted Photoelectrons?

An electron is accelerated in an electric field of 40V cm^(-1) . If e//m of electron is 1.76 xx10^(11) Ckg^(-1) , then its acceleration is

PRADEEP-DUAL NATURE OF RADIATION AND MATTER-Exercise
  1. The photoelectric effect can be explained on the basis of

    Text Solution

    |

  2. Which of the following has minimum stopping potential?

    Text Solution

    |

  3. When radiation is incident on a photoelectron emitter, the potential i...

    Text Solution

    |

  4. Two photons, each of energy 2.5 eV are simultaneously incident on the ...

    Text Solution

    |

  5. The maximum velocity of an electron emitted by light of wavelength lam...

    Text Solution

    |

  6. The photoelectric work function for a metal surface is 4.125 eV. The c...

    Text Solution

    |

  7. The slope of frequency of incident light and stopping potential for a ...

    Text Solution

    |

  8. Threshold wavelength for a metal having work function w(0) is lambda. ...

    Text Solution

    |

  9. The work function for metals A , B and C are respectively 1.92 eV , 2....

    Text Solution

    |

  10. The wavelength of the matter wave is independent of

    Text Solution

    |

  11. If E(1), E(2), E(3), E(4) are the respective kinetic energies of elect...

    Text Solution

    |

  12. What is de-Broglie wavelength assciated with electron moving under a ...

    Text Solution

    |

  13. The minimum energy required by an electron to..........form the metal ...

    Text Solution

    |

  14. The maximum kinetic energy of emitted photoelectrons depends on the......

    Text Solution

    |

  15. The ratio of number of photoelectrons ejected to the number of the pho...

    Text Solution

    |

  16. For given photosenstive material, the photoelectric current is...........

    Text Solution

    |

  17. An increase in the frequency of the incident light.............the vel...

    Text Solution

    |

  18. The minimum energy required to ejected an electron from the surface of...

    Text Solution

    |

  19. In photoelectric effect the energy of the free electron does not depen...

    Text Solution

    |

  20. Photon is not a..........but it is a.......... .

    Text Solution

    |