Home
Class 11
PHYSICS
Forbidden energy gap of Ge is 0.75eV, ma...

Forbidden energy gap of Ge is `0.75eV`, maximum wave length of incident radiation for producing electron-hole pair in germanium semiconductor is

A

`4200 Å`

B

`16500 Å`

C

`4700 Å`

D

`4000 Å`

Text Solution

Verified by Experts

The correct Answer is:
B
`E=(12400(eV-Å))/(lamda(Å))rArrlamda=(12400)/(0.75)=16500 Å`
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTORS

    ALLEN|Exercise Part-3(Exercise-3)|27 Videos

  • SEMICONDUCTORS

    ALLEN|Exercise Part-3(Exercise-4)|51 Videos

  • SEMICONDUCTORS

    ALLEN|Exercise Part-3(Exercise-1)|84 Videos

  • PHYSICAL WORLD, UNITS AND DIMENSIONS & ERRORS IN MEASUREMENT

    ALLEN|Exercise EXERCISE-IV|8 Videos

  • WAVES AND OSCILLATIONS

    ALLEN|Exercise Part-1(Exercise-05)[B]|42 Videos

Similar Questions

Explore conceptually related problems

Forbidden energy gap of Ge is 0.75eV , maximum wave length of incident radiation for producing electron-gole pair in germanium semiconductor is

The forbidden energy gap in Ge is 0.72 eV , given hc = 12440 eVÅ - The maximum wavelength of radiation that will generate electron hole pair is

find the maximum wavelength of electromagnetic radiation which can create a hole-electron pair in germanium.The band gap in germanium is 0.65eV.

The maximum wavelength of electromagnetic radiation, which can create a hole-electron pair in germanium. (Given that forbidden energy gap in germanium is 0.72 eV)

The ionization enegry of the electron in the hydrogen atom in its ground state is 13.6 ev . The atoms are excited to higher energy levels to emit radiations of 6 wavelengths. Maximum wavelength of emitted radiation corresponds to the transition between

The ionization enegry of the electron in the hydrogen atom in its ground state is 13.6 ev . The atoms are excited to higher energy levels to emit radiations of 6 wavelengths. Maximum wavelength of emitted radiation corresponds to the transition between

If lambda_(0) is the threshold wavelnegth of a metal and lambda is the wavelength of the incident radiation, the maximum velocity of the ejected electron from the metal would be

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 maximum wavelength of radiation that can produce photoelectric effect in a certain metal is 200 nm . The maximum kinetic energy acquired by electron due to radiation of wavelength 100 nm will be

In a photoelectric effect experiment the threshold wavelength of light is 380 nm. If the wavelength of incident light is 260 nm, the maximum kinetic energy of emitted electrons will be ________eV Given E (in eV) = (1237)/(lambda ("in nm"))

ALLEN-SEMICONDUCTORS-Part-3(Exercise-2)
  1. Mobility of electron in N-type Ge is 5000 cm^(2)//"volt" sec and condu...

    Text Solution

    |

  2. A diode made forward biased by a two volt battery however there is a d...

    Text Solution

    |

  3. Forbidden energy gap of Ge is 0.75eV, maximum wave length of incident ...

    Text Solution

    |

  4. In figure the input is across the terminals A and C and the output is ...

    Text Solution

    |

  5. An oscillator is nothing but an amplifier with

    Text Solution

    |

  6. In the following common emitter configuration an npn transistor with c...

    Text Solution

    |

  7. In the given transistor circuit, the base current is 35 muA. The value...

    Text Solution

    |

  8. In the circuit shown here, the transistor used has a current gain beta...

    Text Solution

    |

  9. Choose the false statement from the following.

    Text Solution

    |

  10. What will be conductivity of pure sillicon crystal at 300 K temp? if e...

    Text Solution

    |

  11. The output of the given logic gate is 1 when inputs A,B and C are such...

    Text Solution

    |

  12. The arrangement shown in figure performs the logic function of a/an….g...

    Text Solution

    |

  13. You are given two circuits as shown in Fig. 14.38, which consist of NA...

    Text Solution

    |

  14. Which of the following expressions is not true ?

    Text Solution

    |

  15. Which of the following relation is valid in Boolean algebra :-

    Text Solution

    |

  16. Given below are four logic gates symbols. NAND, NOR and OR are respect...

    Text Solution

    |

  17. The output Y of the combination of logic gates shown is equal to

    Text Solution

    |

  18. Which of the following relation is valid in Boolean algebra :-

    Text Solution

    |

  19. The output of given logic circuit is

    Text Solution

    |

  20. The following configuration of gate is equivalent to

    Text Solution

    |