Home
Class 12
PHYSICS
In a semiconducting material the mobilit...

In a semiconducting material the mobilities of electrons and holes are, `mu_e`and `mu_h`respectively. Which of the following is true?

A

`mu_e gtmu_h`

B

`mu_eltmu_h`

C

`mu_e=mu_h`

D

`mu_e lt0, mu_h gt0`

Text Solution

Verified by Experts

The correct Answer is:
a

The mobility of an electron in the conduction is more than the mobility of a hole in the valence band.
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR ELECTRONICS

    FULL MARKS|Exercise Additional Question (Short Answer Questions)|22 Videos
  • SEMICONDUCTOR ELECTRONICS

    FULL MARKS|Exercise Additional Question (Long Answer Questions.)|3 Videos
  • SEMICONDUCTOR ELECTRONICS

    FULL MARKS|Exercise Textual Evaluation Solved (Numerical Problems)|5 Videos
  • SAMPLE PAPER-8

    FULL MARKS|Exercise PART-IV|10 Videos

Similar Questions

Explore conceptually related problems

If p is true and q is false, then which of the following is not true?

Consider three converging lenses L_1, L_2 and L_3 having identical geometrical construction. The index of refraction of L_1 and L_2 are mu_1 and mu_2 respectively. The upper half of the lens L_3 has a refractive index mu_1 and the lower half has mu_2 . A point object O is imaged at O_1 by the lens L_1 and at O_2 by the lens L_2 placed in same position . If L_3 is placed at the same place.

If two wires have same dimension but of different materials, the graph between load and extension is as follow, then which of the following is true:

If positive quantities a,b,c are in H.P. , then which of the following is not true ?

Three thin prisms are combined as shown in figure. The refractive indices of the crown glass for red, yellow and violet rays are mu_r, mu_y and mu_v respectively and those for the flint glass are mu_r^', mu_y^' and mu_v^' respectively. Find the ratio A'/A for which (a) there is no net angular dispersion, and (b) there is no net deviation in the yellow ray.

If DeltaU and DeltaW represent the increase in internal energy and work done bt the system respectively in a thermodynamical process,which of the following is true?

A boy of mass M is applying a horizontal force to slide a box of mass M on a rough horizontal surface. The the floor is mu and the between the box and the floor is mu' . In which of the following cases it is certainly not possible to slide the box?

FULL MARKS-SEMICONDUCTOR ELECTRONICS-Additional question(M. C.Q)
  1. Energy required to break one band in DNA is

    Text Solution

    |

  2. An intrinsic semiconductor, at the absolute zero temperature, behaves ...

    Text Solution

    |

  3. In a semiconducting material the mobilities of electrons and holes are...

    Text Solution

    |

  4. In a pure semiconductor crystal, if current flows due to breakage of c...

    Text Solution

    |

  5. Which of the following, when added as an impurity into the silicon, pr...

    Text Solution

    |

  6. In n-type semiconductors, majority charge carriers are

    Text Solution

    |

  7. In p-type semiconductor,

    Text Solution

    |

  8. The potential barrier in the depletion layer is due to

    Text Solution

    |

  9. When a p-n diode is reverse biased, then

    Text Solution

    |

  10. If an p-n diode is reverse biased, then the resistance measured by an ...

    Text Solution

    |

  11. Diode is used as an a

    Text Solution

    |

  12. A full wave rectifier is operating at 50 Hz, 220v the fundamental freq...

    Text Solution

    |

  13. Zener diode acts as a/an

    Text Solution

    |

  14. A transistor is a/an

    Text Solution

    |

  15. The minimum potential difference between the base and emitter required...

    Text Solution

    |

  16. when NPN transistor is used as an amplifier then ……….

    Text Solution

    |

  17. The current gain for a transistor working as common base amplifier is ...

    Text Solution

    |

  18. Consider an n-p-n transistor amplifier in common - emitter configurati...

    Text Solution

    |

  19. An amplifier has voltage gain A = 1000 . The voltage gain in dB is ………...

    Text Solution

    |

  20. Boolean algerbra is essentially based on

    Text Solution

    |