Home
Class 11
PHYSICS
The frequency of incident light falling ...

The frequency of incident light falling on a photosensitive metal plate is doubled, the K.E of the emitted photo-electrons is

A

remains constant

B

becomes two times its initial value.

C

becomes more than two times its initial value.

D

becomes less than two times its initial value.

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTRONS AND PHOTONS

    TARGET PUBLICATION|Exercise Evaluation Test|19 Videos
  • ELECTRONS AND PHOTONS

    TARGET PUBLICATION|Exercise Critical thinking|22 Videos
  • COMMUNICATION SYSTEMS

    TARGET PUBLICATION|Exercise Evaluation Test|15 Videos
  • ELECTROSTATICS

    TARGET PUBLICATION|Exercise EXCERCISE|156 Videos

Similar Questions

Explore conceptually related problems

If intensity of radiation falling on metal surface is doubled, what happens to K.E. of electron emitted?

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

Light of wavelength A which is less than threshold wavelength is incident on a photosensitive material. If incident wavelength is decreased so that emitted photoelectrons are moving with same velocity, then stopping potential will

The threshold frequency for a certain metal for photoelectric effect is 1.7 xx 10^15 Hz .When light of frequency 2.2 xx 10^15 Hz is incident on the metal surface, the kinetic energy of the emitted. photoelectrons is 3.3 xx 10^-19 J .Calculate Planck's constant.

The slope of frequency of incident light and stopping potential for a given surface will be

Assertion: If the intensity of incident radiation on a metal is doubled, then K.E. of photoelectrons emitted will be doubled. Reason: K.E.=1/2mv^2=h(v-v_0), where v is the velocity of photo electrons.

TARGET PUBLICATION-ELECTRONS AND PHOTONS-Competitive Thinking
  1. In a photoelectric experiment, if both the intensity and frequency of ...

    Text Solution

    |

  2. An electron is accelerated through a potential difference of 1000 volt...

    Text Solution

    |

  3. The frequency of incident light falling on a photosensitive metal plat...

    Text Solution

    |

  4. In an X-ray tube , electrons bombarding the anode produce X-rays of wa...

    Text Solution

    |

  5. When potential difference of 9V is applied between the two plates, ele...

    Text Solution

    |

  6. From the following graph of photo current against collector plate pote...

    Text Solution

    |

  7. The maximum kinetic energy of photoelectrons emitted from a surface w...

    Text Solution

    |

  8. The maximum kinetic energy of the photoelectrons depends only on

    Text Solution

    |

  9. Einstein's photoelectric equation states that E(k) = h v - W . In this...

    Text Solution

    |

  10. The energy of gamma (gamma) ray photon is E(gamma) and that of an X-ra...

    Text Solution

    |

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

    Text Solution

    |

  12. Light of wavelength A which is less than threshold wavelength is incid...

    Text Solution

    |

  13. In a photocell frequency of incident radiation is increased by keeping...

    Text Solution

    |

  14. Following graphs show the variation of stopping potential correspondin...

    Text Solution

    |

  15. The radiation of wavelength 332 nm is incident on a metal of work func...

    Text Solution

    |

  16. The work function of a metal is 4.2 eV , its threshold wavelength will...

    Text Solution

    |

  17. Ultraviolet radiation of 9.2 eV falls on an aluminium suface of work f...

    Text Solution

    |

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

    Text Solution

    |

  19. A radio transmitter operates at a frequency of 880 kHz and a power of ...

    Text Solution

    |

  20. A radiation of 3300 Å falls on a metal to eject electrons with a maxim...

    Text Solution

    |