Home
Class 12
PHYSICS
The mean free path of electrons in a met...

The mean free path of electrons in a metal is `4 xx 10^(-8)m` The electric field which can give on an average `2eV` energy to an electron in the metal will be in the units `V//m`

A

`8xx10^(7)`

B

`5xx10^(-11)`

C

`8xx10^(-11)`

D

`5xx10^(7)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ATOMIC PHYSICS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Atomic Physics|39 Videos

  • ELECTROMAGNETIC INDUCTION

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise PHYSICS|38 Videos

Similar Questions

Explore conceptually related problems

The mean free path of conduction electrons in copper is about 4 xx 10^(-8)m . Find the electric field which can give, on an avrage, 2 eV energy to a conduction electron in a block of copper.

The mean free path of conduction electorns in copper is about 4xx10^(-8) m. for a copper block, find the electric field which can give, on an average, 1eV energy to a conduction electron.

The mean free path of a conduction electron in a metal is 5 xx 10^(-8) m . The electric field, required to be applied across the conductor so as to impart 1eV energy to the conduction electron , will be

The mean free path of conduction electron in a metallic block is 5xx10^(-6) m the block is placed in an electric field of 5xx10^(+7) v m^(-1) calculate the energy of the conduction electron in the block

Compute the typical de-Broglie wavelength of an electrons in a metal at 27^(@)C and compare it with the mean separation between two electrons in a metal which is given to be about 2xx10^(-10)m .

Are the paths of electrons straight lines between successive collisions with the positive ions of metal in the presence of electric field?

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-CURRENT ELECTRICITY-All Questions
  1. A galvanometer has a coil of resistance 100 Omega and gives a full-sc...

    Text Solution

    |

  2. Consider the following two statements: (A)Kirchhoff's junction law f...

    Text Solution

    |

  3. The mean free path of electrons in a metal is 4 xx 10^(-8)m The elect...

    Text Solution

    |

  4. See the electrical circuit shown in this figure. Which of the followin...

    Text Solution

    |

  5. A student measures the terminal potential difference (V) of a cell (of...

    Text Solution

    |

  6. A wire of resistance 12 Omega m^(-1) is bent to from a complete circle...

    Text Solution

    |

  7. In the circuit shown, the current through the 4 Omega resistors is 1 a...

    Text Solution

    |

  8. A cell can be balanced against 110 cm and 100 cm of potentiometer wire...

    Text Solution

    |

  9. A wire of a certain material is stretched slowly by ten percent. Its n...

    Text Solution

    |

  10. Three resistance P, Q, R each of 2 Omega and an unknown resistance S f...

    Text Solution

    |

  11. The resistance of an ammeter is 13 Omega and its scale is graduated fo...

    Text Solution

    |

  12. Two cells, having the same emf, are connected in series through an ext...

    Text Solution

    |

  13. In the circuit of a condacting wire is connected between point A and B...

    Text Solution

    |

  14. When a wire of uniform cross-section a, length I and resistance R is b...

    Text Solution

    |

  15. Two batteries, one of emf 18V and internal resistance 2Omega and the o...

    Text Solution

    |

  16. A battery of 6 volts is connected ot the termainals of a three meter l...

    Text Solution

    |

  17. Five equal resistances each of resistance R are connected as shown in ...

    Text Solution

    |

  18. Resistance n, each of r ohm, when connected in parallel give an equiva...

    Text Solution

    |

  19. The electric resistance of a certain wire of iron is R. If its length ...

    Text Solution

    |

  20. A battery is charged at a potential fo 15 V for 8 h when the current f...

    Text Solution

    |