Home
Class 12
PHYSICS
An EM wave of waalength lambda is incide...

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,

A

`lambda = ( 2 m c (lambda_d)^2)/h`

B

`lambda = ( 2 h (lambda_d)^2)/(mc)`

C

`lambda = ( 2 m (lambda_d)^2)/(hc)`

D

`lambda_d = ( 2 m c lambda^2)/h`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • NEET 2020

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|45 Videos

  • NEET 2022

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Question|50 Videos

Similar Questions

Explore conceptually related problems

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) '-

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

The photo electrons emitted from the surface of sodium metal are

Ultraviolet beam of wavelength 280 nm is incident on lithium surface of work function 2.5 eV. The maximum velocity of electron emitted from metal surface is

The photo-electrons emitted from a surface of sodium metal are such that

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)) .

Light of wavelength 3320 Å incidents on metal surface (work function = 1.07 eV ). To stop emission of photo electron, retarding potential required to be -

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-NEET 2021-QUESTION
  1. If force [F] acceleration [A] time [T] are chosen as the fundamental p...

    Text Solution

    |

  2. A lens of large focal length and large aperture is best suited as an o...

    Text Solution

    |

  3. An EM wave of waalength lambda is incident on a photosensitive surface...

    Text Solution

    |

  4. Two charged spherical conductors of radius R1 and R2 are connected by ...

    Text Solution

    |

  5. A nucleus with mass number 240 breaks into two fragments each of mass ...

    Text Solution

    |

  6. Water falls from a height of 60m at the rate of 15 kg/s to operate a t...

    Text Solution

    |

  7. If E and G resp. denote energy and gravitational constant then E/G has...

    Text Solution

    |

  8. The effective resistance of a parallel connection that consists of fou...

    Text Solution

    |

  9. The half life of a radioactive nuclide is 100 hours. The fraction of o...

    Text Solution

    |

  10. An inductor of inductance L, a capacitor of capacitance C and a resist...

    Text Solution

    |

  11. Column I- gives certain physical terms associated with flow of current...

    Text Solution

    |

  12. Polar molecules are the molecules:

    Text Solution

    |

  13. Match column 1 and column 2 and choose correct match from the given ch...

    Text Solution

    |

  14. A convex lens A of focal length 20cm and a concave lens G of focal le...

    Text Solution

    |

  15. A cup of coffee cools from 90^0 C to 80^0 C in t minutes when the room...

    Text Solution

    |

  16. The escape velocity from the earth's surface is v. The escape velocity...

    Text Solution

    |

  17. A body is executing simple harmonic motion with frequency 'n' the freq...

    Text Solution

    |

  18. The number of photons per second on an average emitted by the souce of...

    Text Solution

    |

  19. A dipole is placed in an electric field as shown. In which directions ...

    Text Solution

    |

  20. For a plane EM wave propagating in x-direction which one of the follow...

    Text Solution

    |