Home
Class 12
PHYSICS
A metal surface is illuminated by a ligh...

A metal surface is illuminated by a light of given intensity and frequency to cause photoemission. If the intensity of illumination is reduced to one-fourth of its original value, then the maximum KE of emitted photoelectrons will become.

A

Unchanged

B

`l/16th` of original value

C

Twice the original value

D

Four times the original value

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • PHOTOELECTRIC EFFECT AND MATTER WAVES

    PHYSICS GALAXY - ASHISH ARORA|Exercise Conceptual MCQ|27 Videos
  • PHOTOELECTRIC EFFECT AND MATTER WAVES

    PHYSICS GALAXY - ASHISH ARORA|Exercise Numerical MCQs|60 Videos
  • PHOTOELECTRIC EFFECT AND MATTER WAVES

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved numerical problems|42 Videos
  • NUCLEAR PHYSICS AND RADIOACTIVITY

    PHYSICS GALAXY - ASHISH ARORA|Exercise Concptual MCQs|48 Videos
  • THERMODYNAMICS LAWS & SPECIFIC HEATS OF GASES

    PHYSICS GALAXY - ASHISH ARORA|Exercise Practice Exercise 3.4|11 Videos

Similar Questions

Explore conceptually related problems

Assertion: A photosensitive surface is illuminated by a monochromatic light of wavelength lambda and intensity I. The number of photoelectrons emitted per second is doubled when the intensity of light is doubled. However, the maximum speed of emitted electrons remains unchanged. Reason: The number of electrons emitted per second is directly proportional to the intensity of the incident light. The kinetic energy of the emitted photoelectrons is independent of the intensity of the light.

In photoelectric effect if the intensity of light is doubled then maximum kinetic energy of photoelectrons will become

Light of wavelength 3000Å is incident on a metal surface whose work function is 1 eV. The maximum velocity of emitted photoelectron will be

When the intensity of radiation incident on photographic plate is increased keeping frequency constant, thenthe number and K.E. of photoelectrons emitted?

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

A metallic surface is illuminated alternatively with lights of wavelengths 3000A and 6000A . It is obseved that the maximum speeds of the photoelectrons under these illumination are in the ratio 3:1 Q.What will be the maximum speed of the photoelectrons so emitted?

If the displacement amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity will become

If the amplitude of sound is doubled and the frequency reduced to one fourth, the intensity of sound at the same point will be

PHYSICS GALAXY - ASHISH ARORA-PHOTOELECTRIC EFFECT AND MATTER WAVES-Discussion question
  1. What is the speed of a photon with respect to another photon if (a) th...

    Text Solution

    |

  2. which coloured light bulb, red, orange, yellow, green, or blue, emits ...

    Text Solution

    |

  3. A stone is dropped from the top of a building. As the stone falls, doe...

    Text Solution

    |

  4. "If the frequency of light incident on a metallic plate be doubled." E...

    Text Solution

    |

  5. The frequency and the intensity of a beam of light falling on the surf...

    Text Solution

    |

  6. Let be the maximum kinetic energy of photoelectrons emitted by light o...

    Text Solution

    |

  7. When stopping potential is applied in an experiment on photoelectric e...

    Text Solution

    |

  8. If the frequency of light in a photoelectric experiment is doubled the...

    Text Solution

    |

  9. A cesium photocell, with a steady potential difference of 60 V across ...

    Text Solution

    |

  10. A point source of light is used in a photoelectric effect. If the sour...

    Text Solution

    |

  11. A metal surface is illuminated by a light of given intensity and frequ...

    Text Solution

    |

  12. A point source causes photoelectric effect from a small metal plate. W...

    Text Solution

    |

  13. The stopping potential for acertain photosensitive metal is Vq when th...

    Text Solution

    |

  14. The collector plate in an experiment of photoelectric effect is kept v...

    Text Solution

    |

  15. Which electrons are emitted in the photoelectric effect

    Text Solution

    |

  16. Light of two different frequencies whose photons have energies 1eV and...

    Text Solution

    |

  17. The image of the sun is formed on the photosensitive metal with a conv...

    Text Solution

    |

  18. When monochromatic light of wavelength lambda illuminates a metal surf...

    Text Solution

    |

  19. Accprding to Einste in theory of photoelectric effect, light is not be...

    Text Solution

    |

  20. According to Einstein's photoelectric equation , the graph between the...

    Text Solution

    |