Home
Class 12
PHYSICS
The electricity conductivity of a semico...

The electricity conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than 2480nm is incident on it. The band gap (in eV) for the semiconductor is

A

0.9

B

0.7

C

0.5

D

0.1

Text Solution

Verified by Experts

The correct Answer is:
C
`E_(g)=(1240eVnm)/(lambdanm)=(1240eVnm)/(2480nm)=0.5eV`
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

The electrical conductivity of a semiconductor increases when electromagnatic radiation of wavelength shorter than 2480 nm is incident on it. The band gap (in eV) for the semiconductor is [hc=1242 eV nm]

The electrical conductivity of a semiconductor increases wen electromagnetic radiations of wavelength shorter than 2480 nm is incident on it. The band gap (in eV) for the semiconductor is [ hc = 1242 e V n m ]

The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than 2480 nm is incident on it. The band gap in (eV) for the semiconductor is.

The electrical conductivity of semicondutor increases when electromagnetic radiation of wavelength shorter than 24800Å is incident on it. The band gap for the semiconductor is

The electrical conductivity of semicondutor increases when electromagnetic radiation of wavelength shorter than 29800 Å is incident on it. The band gap for the semiconductor is

The electrical conductivity of a semiconductor increases when electromagnatic radiation of wavelength shorter than 2480 nm is incident on it. Find the band gap of the semiconductor. Given h=6.63xx10^(-34)Js, and 1eV=1.6xx10^(-19)J .

The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than 1240 nm is incident on it. The forbidden band energy for the semi conductor is (in eV).

Conductivity of a semiconuctor increases when a radiation of wavelength is less than 2480 nm is incident on it. The forbidden gap is

The electron condactivety of a samiconductor increases 2480 nm is incident on it . The hand gap in (eV) for the semicondactor is

MTG GUIDE-ELECTRONIC DEVICES-NEET CAFÉ (TOPICWISE PRACTICE QUESTIONS)
  1. If the energy gap between valence band and conduction band is 5 eV, th...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  6. Which of the following statements is correct?

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  17. p-type semiconductor is obtained by doping

    Text Solution

    |

  18. Conductivity in semiconductor is due to

    Text Solution

    |

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

    Text Solution

    |

  20. Region which have no free electron and holes in P-N junction is

    Text Solution

    |