Home
Class 12
PHYSICS
Carbon , silicon and germanium have four...

Carbon , silicon and germanium have four valence elcectrons each . These are characterised by valence and conduction bands separated by energy band - gap respectively equal to ` (E_g)_(c) (E_g)_(si) ` and ` (E_g)_(Ge) `. Which of the following statements ture ?

A

`(E_(g))_(Si) lt (E_(g))_(Ge) lt (E_(g))_(C )`

B

`(E_(g))_ lt (E_(g))_(Ge) lt (E_(g))_(Si)`

C

`(E_(g))_ gt (E_(g))_(Si)gt (E_(g))_(Ge)`

D

`(E_(g))_(C )=(E_(g))_(Si)=(E_(g))_(Ge)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTRONIC DEVICES

    MTG GUIDE|Exercise CHECK YOUR BEET VITALS|25 Videos

  • ELECTRONIC DEVICES

    MTG GUIDE|Exercise AIPMT/NEET (MCQs)|42 Videos

  • ELECTRONIC DEVICES

    MTG GUIDE|Exercise AIPMT/NEET (MCQs)|42 Videos

  • ELECTROMAGNETIC WAVES

    MTG GUIDE|Exercise AIPMT/NEET(MCQs)|15 Videos

  • ELECTROSTATICS

    MTG GUIDE|Exercise AIPMT/NEET (MCQ.s)|34 Videos

Similar Questions

Explore conceptually related problems

Carbon silicon and germanium have four valence electrons each these are characterised by valence and conduction bands separated by energy band gap respectively equal to which of the following statement is true (a) (E_(g))_(Si)lt(E_(g))_(Ge)lt(E_(g))_(c ) (b) (E_(g))_(c )lt(E_(g))_(Gelt(E_(g))_(Si) (c ) (E_(g))_(c )gt(E_(g))_(Si)gt(E_(g))_(Ge) (d)(E_(g))_(c )=(E_(g))_(si)=(E_(g))_(Ge)

Carbon, silicon and germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by (E_(g))_(C),(E_(g))_(Si) and (E_(g))_(Ge) , respectively. Which one of the following relationship is true in their case?

Carbo , silicon and Germanitum atomshave four valence electrons each . Their velence and conduction bands are separeated by energy nands gaps represented by (E_g)_C , (E_g)_(Si), (E_g)_(Ge) repectively . Which relativon is correct ?

Carbon, silicon and germanium have four valence electrons each. The most appropriate statement for these elements (at room temperature) is

MTG GUIDE-ELECTRONIC DEVICES-NEET CAFÉ (TOPICWISE PRACTICE QUESTIONS)
  1. Find the wavelength of light that may excite an electron in the valenc...

    Text Solution

    |

  2. If the energy gap between valence band and conduction band is 5 eV, th...

    Text Solution

    |

  3. Carbon , silicon and germanium have four valence elcectrons each . The...

    Text Solution

    |

  4. The electricity conductivity of a semiconductor increases when electro...

    Text Solution

    |

  5. At absolute zero temperature, a semiconductor acts as a/an

    Text Solution

    |

  6. A silicon specimen is made into a P-type semiconductor by dopping, on ...

    Text Solution

    |

  7. Which of the following statements is correct?

    Text Solution

    |

  8. A small impurity is added to germanium to get a n-type seiniconductor....

    Text Solution

    |

  9. The impurity atom added to germenium to make it N-type semiconductor i...

    Text Solution

    |

  10. What is the conductivity of a semiconductor (in Omega^(-1) m^(-1)) if ...

    Text Solution

    |

  11. If the ratio of the concentration of electron to that of holes in a se...

    Text Solution

    |

  12. For a p-type semiconductor, which of the following statements is true?

    Text Solution

    |

  13. In a semiconductor material (1//5)th of the total current is carried b...

    Text Solution

    |

  14. A block of pure silicon at 300 K has a length of 10 cm and an area of ...

    Text Solution

    |

  15. When a solid with a band gap has a donor level just below

    Text Solution

    |

  16. A pure semiconductor has equal electron and hole concentration of 10^(...

    Text Solution

    |

  17. An intrinsic semiconductor has a resistivity of 0.50 Omega m at room t...

    Text Solution

    |

  18. p-type semiconductor is obtained by doping

    Text Solution

    |

  19. Conductivity in semiconductor is due to

    Text Solution

    |

  20. Which of the following equations correctly represents the temperature ...

    Text Solution

    |