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

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

A

each of them decreases

B

each of them increases

C

Copper decreases and that of Germanium increases

D

Germanium decreases and that of Copper increases

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 3|8 Videos
  • STATIONARY WAVES

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP-8|20 Videos

Similar Questions

Explore conceptually related problems

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

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

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

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

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

MARVEL PUBLICATION-SEMICONDUCTORS -MCQs
  1. In a good conductor the energy gap between the conduction band and the...

    Text Solution

    |

  2. In an insulator

    Text Solution

    |

  3. A strip of copper and another of germanium are cooled from room tempe...

    Text Solution

    |

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

    Text Solution

    |

  5. The probability of electrons to be found in the conduction band of an ...

    Text Solution

    |

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

    Text Solution

    |

  7. The impurity atoms with which pure silicon should be doped to make a p...

    Text Solution

    |

  8. What is the change in resistance and electrical coductivity of a sem...

    Text Solution

    |

  9. The forbidden energy band gap in conductors, semiconductors and insula...

    Text Solution

    |

  10. How does potential barrier of a semiconductor vary with temperature?

    Text Solution

    |

  11. In a semiconductor, the energy gap between the valence and conduction ...

    Text Solution

    |

  12. The mobility of mobile holes is less than that of mobile electrons bec...

    Text Solution

    |

  13. The electrical conductivity of pure silicon can be increased by

    Text Solution

    |

  14. Find the 'wrong' statement from the following : In a semiconductor

    Text Solution

    |

  15. The specimen of an intrinsic semiconductor contains 1.2xx10^15 holes/m...

    Text Solution

    |

  16. A conductor, an insulator, a semiconductor and an alloy are heated by ...

    Text Solution

    |

  17. Which is the wrong statement from the following?

    Text Solution

    |

  18. In pure semiconductor, the number of conduction electrons is 6 xx 10^1...

    Text Solution

    |

  19. A semiconductor is known to have an electron concentration of 6xx10^(1...

    Text Solution

    |

  20. Choose the false statement from the following

    Text Solution

    |