Home
Class 12
PHYSICS
The de Broglie wavelength of an electron...

The de Broglie wavelength of an electron accelerated by an electric field of V volt is given by:

A

`sqrt((150)/(V) A`

B

`(h)/(sqrt(2mE)A`

C

`(h)/(sqrt(2mKT)A`

D

`sqrt((12.26)/(V)A`

Text Solution

Verified by Experts

The correct Answer is:
1
`lambda = (p)/(h) = (h)/(mv)`
also `KE = (1)/(2) mv^(2) xx (m)/(m)`
`2(KE) **m=p^(2)`
` p = sqrt(2(KE)m)`
`p= sqrt(2(eV)m)`
lambda = (h)/sqrqt(2meV)`
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise EXERCISE - 1 (H.W)|24 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise EXERCISE - 2 (C.W)|25 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    NARAYNA|Exercise C. U. Q|88 Videos

  • CURRENT ELECTRICITY

    NARAYNA|Exercise Level 6|43 Videos

  • DUAL NATURE

    NARAYNA|Exercise LEVEL-II (H.W)|17 Videos

Similar Questions

Explore conceptually related problems

The de Broglie wavelength is given by

The de Broglie wavelength lamda of an electron accelerated through a potential V in volts is

de Broglie wavelength of an electron after being accelerated by a potential difference of V volt from rest is :

Show that de-Broglie wavelength of electron acceleratated through (V) volt is nearly given by : lambda ( "in" Å ) = [ ( 150)/V]^(1//2) .

What is Broglie wavelength of an electron accelerated through 25000 volt ?

Calculate the de-Broglie wavelength of electrons accelerated through a potential difference of 64 volts

(a) What is photo electric effect ? State the laws of photo - electric emission. (b) Show that de - Broglie wavelength of electron when accelerated through a potential difference V is given by the relation - lamda=(12.27)/sqrtVÅ , where V is in volt.

Show that de Broglie wavelength of electrons accelerated V volt is very nearly given by: lamda("in Ã…")=((150)/(V))^(1//2)

What is the de Broglie wavelength of an electron accelerated from rest through a potential difference of V volts?

NARAYNA-DUAL NATURE OF RADIATION AND MATTER-EXERCISE - 1 (C.W)
  1. If the momentum of a photon is p, then its frequency is

    Text Solution

    |

  2. A particle of mass 5M at rest decays into two particle of masses 2 m a...

    Text Solution

    |

  3. An electron and a photon have same wavelength of 10^(-9) m. If E is th...

    Text Solution

    |

  4. A proton and an alpha-particle are accelerated through same potential ...

    Text Solution

    |

  5. A particle with rest mass m0 is moving with velocity c. what is the d...

    Text Solution

    |

  6. The velocity of a body of mass 10 gm is 2 xx 10^(4) ms^(-1). The value...

    Text Solution

    |

  7. The ratio of wavelength of deutron and proton accelerated through the ...

    Text Solution

    |

  8. The wavelenght of an electron of energy 10 keV will be

    Text Solution

    |

  9. Through what potential difference should an electron be accelerated so...

    Text Solution

    |

  10. Find the ratio of de Broglie wavelength of a proton and as alpha-parti...

    Text Solution

    |

  11. Consider a hypothetical annihilation of a stationary electron with a s...

    Text Solution

    |

  12. The de Broglie wavelength of an electron accelerated by an electric fi...

    Text Solution

    |

  13. The de Broglie wavelenght associated with neutrons in thermal equilibr...

    Text Solution

    |

  14. When an electron experiences a potential difference of 150 volt, the w...

    Text Solution

    |

  15. For what kinetic energy of a neutron will the associated de broglie wa...

    Text Solution

    |

  16. A particle is moving three times as fast as an electron. The ratio of ...

    Text Solution

    |

  17. An X-ray tube is operated at 50 kV. The minimum wavelength produced is

    Text Solution

    |

  18. Which of the following wavelength falls in X - ray region

    Text Solution

    |

  19. A metal block is exposed to beams of X-rays of different wavelength. X...

    Text Solution

    |

  20. In producing X-rays a beam of electrons accelerated by a potential di...

    Text Solution

    |