Home
Class 12
PHYSICS
When monochromatic radiation of intensit...

When monochromatic radiation of intensity I falls on a metal surface, the number of photoelectrons and their maximum kinetic are N and T respectively. If the intensity of radiation is 2 I, the number of emitted electrons and their maximum kinetic energy are respectively.

A

N and 2T

B

2N and T

C

2N and 2T

D

N and T

Text Solution

Verified by Experts

The correct Answer is:
B

Number of photoelectrons `prop` Intensity and maximum KE is independent of intensity.
Promotional Banner

Topper's Solved these Questions

  • ELECTRON, PHOTON, PHOTOELECTRIC EFFECT & X -RAY

    ERRORLESS|Exercise ASSERTION & REASON|27 Videos
  • ELECTRON, PHOTON, PHOTOELECTRIC EFFECT & X -RAY

    ERRORLESS|Exercise NCERT BASED QUESTIONS (X-Rays)|34 Videos
  • ELECTROMAGNETIC INDUCTION

    ERRORLESS|Exercise ASSERTION & REASON|20 Videos
  • ELECTRONICS

    ERRORLESS|Exercise Assertion & Reason|26 Videos

Similar Questions

Explore conceptually related problems

When a radiation of energy 5eV falls on a surface,the emitted photoelectrons have a maximum kinetic energy of 3eV .The stopping potential is

When a given electromagnetic radiation illuminates the metal surface , the maximum kinetic energy of photoelectrons depends on

When monochromatic light falls on a photosensitive material, the number of photoelectrons emitted per second is n and their maximum kinetic energy is K_(max) . If the intensity of the incident light is doubled keeping the frequency same, then:

When photons of energy hv fall on a metal plate of work function ' W_(0) ' , photoelectrons of maximum kinetic energy 'K' are ejected. If the frequency of the radiation is doubted, the maximum kinetic energy of the ejected photoelectrons will be

The photoelectros emitted by an illuminted surface have a maximum kinetic energy of 3.0 eV. If the intensity of the light is tripled, What is the maximum kinetic energy of photoelectrons now?

When an electro-magnetic radiation is incident on the surface of metal, maximum kinetic energy of photoelectron depends on-

When photons of energy hv fall on an aluminium plate (of work function E_(0) ), photoelectrons of maximum kinetic energy K are ejected . If the frequency of the radiation is doubled , the maximum kinetic energy of the ejected photoelectrons will be

When light falls on a metal surface , the maximum kinetic energy of the emitted photo - electrons depends upon

When a high frequency electromagnetic radiation is incident on a metallic surface, electrons are emitted from the surface. Energy of emitted photoelectrons depends only on the frequency of incident electromagnetic radiation and the number of emitted electrons depends only on the intensity of incident light. Einstein's protoelectron equation [K_(max)=hv-phi} correctly ecplains the PE, where upsilon= frequency of incident light and phi= work function. Q. Light of wavlength 3300 is incident on two metals A and B, whose work function are 4 eV and 2 eV, respectively. Then

ERRORLESS-ELECTRON, PHOTON, PHOTOELECTRIC EFFECT & X -RAY-PAST YEARS QUESTIONS
  1. A modern 200 W sodium street lamp emits yellow light of wavelength 0.6...

    Text Solution

    |

  2. A source S(1) is producing 10^(15) photons/s of wavelength 5000 Å Anot...

    Text Solution

    |

  3. When monochromatic radiation of intensity I falls on a metal surface, ...

    Text Solution

    |

  4. Energy from the sun is recived on earth at the rate of 2 cal per cm^(2...

    Text Solution

    |

  5. If 5% of the energy supplied to a bulb is irradiated as visible light,...

    Text Solution

    |

  6. The work function of metal is 1 eV. Light of wavelength 3000 Å is inc...

    Text Solution

    |

  7. For photoelectric emission from certain metal the cut - off frequency ...

    Text Solution

    |

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

    Text Solution

    |

  9. In photoelectric effect, the electrons are ejected from metals if the ...

    Text Solution

    |

  10. When photons of energy hv fall on an aluminium plate (of work function...

    Text Solution

    |

  11. A photon of energy 4 eV is incident on a metal surface whose work func...

    Text Solution

    |

  12. The light rays having photons of energy 1.8 eV are falling on a metal ...

    Text Solution

    |

  13. When ultraviolet rays incident on metal plate then photoelectric effec...

    Text Solution

    |

  14. A photo sensitive metallic surface has work funcation hv(0). If photon...

    Text Solution

    |

  15. The work functions for metals A, B and C are respectively 1.92 eV, 2....

    Text Solution

    |

  16. When the energy of the incident radiation is increased by 20%, the kin...

    Text Solution

    |

  17. A photoelectric surface is illuminated successively by monochromatic l...

    Text Solution

    |

  18. The work function of a metallic surface is 5.01 eV. The photo - electr...

    Text Solution

    |

  19. An electron in the hydrogen atom jumps from excited state n to the gro...

    Text Solution

    |

  20. A certain metallic surface is illuminated with monochromatic light of ...

    Text Solution

    |