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:
2
The number of photoelectrons ejected is directly proportional to the intensity of incident light. Maximum kinetic energy is dependent of intensity of incident light but depends upon the frequency of light. Hence option (B) is correct.
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise EXERCISE - 4|25 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise ASSERTION AND REASON|15 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise EXERCISE - 2 (H.W)|20 Videos

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 6|43 Videos

  • DUAL NATURE

    NARAYNA|Exercise LEVEL-II (H.W)|17 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

NARAYNA-DUAL NATURE OF RADIATION AND MATTER-EXERCISE - 3
  1. The figure shows a plot of photo current versus anode potential for a ...

    Text Solution

    |

  2. A 0.66 kg ball is moving wih a speed of 100 m//s. The associated wavel...

    Text Solution

    |

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

    Text Solution

    |

  4. The potential difference that must be applied to stop the fastest phot...

    Text Solution

    |

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

    Text Solution

    |

  6. In photoelectric emission process from a metal of work function 1.8 eV...

    Text Solution

    |

  7. The threshold frequency for a certain metal is 3.3xx10^(14) Hz. If lig...

    Text Solution

    |

  8. Electrons used in an electron microscope are accelerated by a voltage ...

    Text Solution

    |

  9. Monochromatic radiation emitted when electron on hydrogen atom jumps f...

    Text Solution

    |

  10. Lights of two different frequencies whose photons have energies 1 and ...

    Text Solution

    |

  11. A alpha -parhticle moves in a circular path of radius 0.83 cm in th...

    Text Solution

    |

  12. If the momentum of an electron is changed by p, then the de - Broglie ...

    Text Solution

    |

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

    Text Solution

    |

  14. If velocity of a particle is 3 times of that of electron and ratio of ...

    Text Solution

    |

  15. The wavelength lambda(e ) of an electron and lambda(p) of a photon of...

    Text Solution

    |

  16. If the kinetic energy of the particle is increased to 16 times its pre...

    Text Solution

    |

  17. Light with an enargy flux of 25xx10^(4) Wm^(-2) falls on a perfectly r...

    Text Solution

    |

  18. When the energy of the incident radiation is increased by 20 % , kinet...

    Text Solution

    |

  19. When a certain metallic surface is illuminated with mono chromatic lig...

    Text Solution

    |

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

    Text Solution

    |