Home
Class 12
PHYSICS
Light of frequency 1.5 times the thresho...

Light of frequency `1.5` times the threshold frequency is incident on a photo-sensitive material. If the frequency is halved and the intensity is doubled, the photoelectric current becomes

A

be doubled

B

be halved

C

be zero

D

increase

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTRONS AND PHOTONS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 17|15 Videos
  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 16|30 Videos
  • ELECTROSTATICS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|20 Videos

Similar Questions

Explore conceptually related problems

Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. If the frequency is halved and the intensity is doubled, the photoelectric current becomes

Assertion: Light of frequency 1.5 times the threshold frequency is incident on photo-senstive material. If the frequency is halved and intensity is doubled, the photo current remains unchanged. Reason: The photo electric current varies directely with the intensity of light and frequncy of light.

Radiation of frequency 1.5 times the threshold frequency is incident on a photosensitive material. If the frequency of incident radiation is halved and the intensity is doubled, the number of photoelectron ejected per second becomes:

Light of frequency 1.5 times the threshold frequency is incident on a photodsensitive material . What will be the photoelectric current if frequency is halved and intensity is doubled

Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material.What will be the photoelectric current if the frequency is halved and intensity is doubled 1) Four times 2) One-fourth 3) Zero 4) Doubled

Light of frequency v is incident on a substance of threshold frequency v(v lt v) . The energy of the emitted photo-electron will be

Light of a particular frequency v is incident on a metal surface. When the intensity of incident radiation is increased, the photoelectric current

Insentity of light incident on a photo sensitive surface is doubled. Then

MARVEL PUBLICATION-ELECTRONS AND PHOTONS -TEST YOUR GRASP - 17
  1. Light of frequency 1.5 times the threshold frequency is incident on a ...

    Text Solution

    |

  2. The energy of a photon of wavelength 4000 Å is (use h=6.66xx10^(-34...

    Text Solution

    |

  3. In a photoelectric experiment, the reciprocal of the slope of the st...

    Text Solution

    |

  4. The momentum of a photon of an electromagnetic radiation is 3.3xx10^(-...

    Text Solution

    |

  5. If the threshold frequency for photoemission on a metal corresponds t...

    Text Solution

    |

  6. Photons of energy 5.5 eV are incident on a metal surface. If the stopp...

    Text Solution

    |

  7. When light of energy 2.5 eV falls on a metal surface, the maximum K.E....

    Text Solution

    |

  8. The threshold energy of a surface is 2 eV. When irradiated with some r...

    Text Solution

    |

  9. Sodium and copper have work functions of 2.3 eV and 4.5 eV. The ratio ...

    Text Solution

    |

  10. The surface of a metal is illuminated with light of wavelength 400 nm....

    Text Solution

    |

  11. The current in a photocell can be just reduced to zero by a potential ...

    Text Solution

    |

  12. A lamp is placed at a distance of 8 cm from a photocell and the microa...

    Text Solution

    |

  13. The cathode of a photoelectric cell is changed such that the work func...

    Text Solution

    |

  14. The wavelength of the photons are 4500 Å and 6000 Å. The ratio of thei...

    Text Solution

    |

  15. An AIR station is broadcasting the waves of wavelength 300 metres. If ...

    Text Solution

    |

  16. For a photosensitive metal surface the graph of the stopping potential...

    Text Solution

    |