Home
Class 12
PHYSICS
A piece of copper and another of germani...

A piece of copper and another of germanium are cooled from room temperature to `80 K`. The resistance of

A

each of these decreases

B

copper strip decreases and that of germanium decreases

C

copper strip decreases and that of germanium increases

D

each of these increases

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • SEMI CONDUCTOR DEVICES

    NARAYNA|Exercise Level-I (C.W)|21 Videos
  • SEMI CONDUCTOR DEVICES

    NARAYNA|Exercise Level-II (C.W)|33 Videos
  • SEMI CONDUCTOR DEVICES

    NARAYNA|Exercise Level-II (H.W)|36 Videos
  • RAY OPTICS AND OPTICAL INSTRAUMENTS

    NARAYNA|Exercise EXERCISE- 4 One or more than one correct answer type|13 Videos
  • SEMICONDUCTOR ELECTRONICS

    NARAYNA|Exercise ADDITIONAL EXERCISE (ASSERTION AND REASON TYPE QUESTIONS :)|19 Videos

Similar Questions

Explore conceptually related problems

A piece of copper and another of germanium are cooled from room temperature to 77 K, the resistance of -

A strip of copper and another of germanium are cooled from room temperature to 80 K. The resistance of

A strip of copper and another of germanium are cooled from room tempreature to 80K The resistance of

Apiece of copper and another of germanium are cooler from room teperature to 77K , the resistence of

A Piece of copper and another of Ge are cooled from room temperature to 80K. The resistance of:

NARAYNA-SEMI CONDUCTOR DEVICES-C.U.Q
  1. Which property makes the crystalline solids to have sharp melting poin...

    Text Solution

    |

  2. Which of the following is not a property of crystalline substance

    Text Solution

    |

  3. A piece of copper and another of germanium are cooled from room temper...

    Text Solution

    |

  4. The difference in the variation of resistance with temperature in a me...

    Text Solution

    |

  5. The manifestation of band structure in solids is due to

    Text Solution

    |

  6. A solid which is not transperent to visible light and whose conductivi...

    Text Solution

    |

  7. To a germanium sample, traces of gallium are added as an impurity. The...

    Text Solution

    |

  8. In semiconductors at a room temperature

    Text Solution

    |

  9. Identify the property which is not characteristic for a semiconductor ...

    Text Solution

    |

  10. Carbon , silicon and germanium have four valence electrons each . At r...

    Text Solution

    |

  11. The relation between number of free electrons (n) in a semiconductor a...

    Text Solution

    |

  12. An electrically neutral semiconductor has

    Text Solution

    |

  13. There is no hole current in conductors because they have

    Text Solution

    |

  14. In the insulators

    Text Solution

    |

  15. In semiconductors the for bidden energy gap between V.B and C.B is of ...

    Text Solution

    |

  16. The level formed due to impurity atom, in the for hidden energy gap, v...

    Text Solution

    |

  17. The bond in semiconductors is

    Text Solution

    |

  18. On increasing temperature, the conductivity of pure semiconductors

    Text Solution

    |

  19. The mobility of free electrons is greater then that of free holes beca...

    Text Solution

    |

  20. A semiconductor at 0 K behaves as

    Text Solution

    |