Home
Class 12
PHYSICS
An e-m wave of wavelength lambda is inci...

An e-m wave of wavelength `lambda` is incident on a photo sensitive surface of negligible work function. If the photoelectrons emitted from this surface have the de-Broglie wavelength `lambda_(1)`. Find relation between `'lambda'` and `'lambda_(1)`'-

A

`lamda = (mc)/h lamda'^(2)`

B

`lamda = (mc)/h lamda'`

C

`lamda = (2mc)/h lamda'^(2)`

D

`lamda = (mc)/(2h) lamda'^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF MATTER AND RADIATION

    MTG GUIDE|Exercise AIPMT/ NEET MCQs|30 Videos

  • DUAL NATURE OF MATTER AND RADIATION

    MTG GUIDE|Exercise NEET Cafe Topicwise Practice Questions (DAVISSON AND GERMER EXPERIMENT)|2 Videos

  • CURRENT ELECTRICITY

    MTG GUIDE|Exercise MCQs AIPMT / NEET|32 Videos

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS

    MTG GUIDE|Exercise AIPMT/NEET MCQS|31 Videos

Similar Questions

Explore conceptually related problems

de-Broglie wavelength lambda is

If an em wave of wavelength lambda is incident on a photosenstive surface of negligible work function. If the photoelectrons emitted from this surface have the de-Broglie wavelength lambda_1 , prove that lambda=((2mc)/h)lambda_1^2

An EM wave of waalength lambda is incident on a photosensitive surface of negligible work function. If m mass is of photo electron emitted from the surface has de-broglie wavelength lambda_d then,

The de Broglie wavelength lambda of a particle

De Broglie wavelength lambda is proportional to

A proton and an electron are accelerated by same potential difference have de-Broglie wavelength lambda_(p) and lambda_(e ) .

X-rays of wavelength lambda fall on photosenstive surface, emitting electrons. Assuming that the work function of the surface can be neglected, prove that the de-broglie wavelength of electrons emitted will be sqrt((hlambda)/(2mc)) .

MTG GUIDE-DUAL NATURE OF MATTER AND RADIATION -CHECK YOUR NEET VITALS
  1. The work function of a substance is 3.68 eV. The longest wavelength of...

    Text Solution

    |

  2. The collector plate in an experiment on photoelectric effect is kept v...

    Text Solution

    |

  3. If K(1) and K(2) are maximum kinetic energies of photoelectrons emitte...

    Text Solution

    |

  4. An e-m wave of wavelength lambda is incident on a photo sensitive surf...

    Text Solution

    |

  5. If the kinetic energy of a particle is increased by 10 times, the perc...

    Text Solution

    |

  6. Light of frequency 7.21xx10^(14)Hz is incident on a metal surface. Ele...

    Text Solution

    |

  7. When a monochromatic point source of light is at a distance of 0.2 m f...

    Text Solution

    |

  8. A proton has kinetic energy E = 100 keV which is equal to that of a ph...

    Text Solution

    |

  9. Consider a metal exposed to light of wavelength 600nm. The maximum ene...

    Text Solution

    |

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

    Text Solution

    |

  11. In the Davisson and Germer experiment , the velocity of electrons emit...

    Text Solution

    |

  12. According to Einstein's photoelectric equation, the plot of the maximu...

    Text Solution

    |

  13. A photo-cell is illuminated by a source of light which is placed at a ...

    Text Solution

    |

  14. A photon of energy E ejects a photoelectron from a metel surface whose...

    Text Solution

    |

  15. In a photon-electron collision ……………………. .

    Text Solution

    |

  16. Consider a beam of electrons (each electron with energy E(0)) incident...

    Text Solution

    |

  17. A proton, a neutron, an electron and an alpha-particle have same energ...

    Text Solution

    |

  18. A beam of cathode rays is subjected to crossed electric (E ) and magn...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |